configure.in: convert all obsolete AC_TRY_* macros to AC_*_IFELSE,
only whitespace changes in generated configure (diff -uEwB).
diff --git a/configure b/configure
index 34a068e..0489c7a 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 80965 .
+# From configure.in Revision: 80966 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.65 for python 2.7.
 #
@@ -5611,6 +5611,7 @@
   ac_cv_opt_olimit_ok=yes
 else
   ac_cv_opt_olimit_ok=no
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 CC="$ac_save_cc"
@@ -5652,6 +5653,7 @@
   ac_cv_olimit_ok=yes
 else
   ac_cv_olimit_ok=no
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
   CC="$ac_save_cc"
@@ -5675,7 +5677,6 @@
 /* end confdefs.h.  */
 
     void f(char*,...)__attribute((format(PyArg_ParseTuple, 1, 2)));
-
 int
 main ()
 {
@@ -5683,15 +5684,19 @@
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
 
+
 $as_echo "#define HAVE_ATTRIBUTE_FORMAT_PARSETUPLE 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
+
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 
 fi
@@ -7018,7 +7023,7 @@
 int
 main ()
 {
-long double x; x = (long double)0.;
+long double x; x = (long double)0;
   ;
   return 0;
 }
@@ -7297,7 +7302,8 @@
 have_pthread_t=no
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <pthread.h>
+
+  #include <pthread.h>
 int
 main ()
 {
@@ -7305,6 +7311,7 @@
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
   have_pthread_t=yes
@@ -8048,7 +8055,8 @@
 $as_echo_n "checking for genuine AIX C++ extensions support... " >&6; }
 		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include "/usr/lpp/xlC/include/load.h"
+
+		  #include "/usr/lpp/xlC/include/load.h"
 int
 main ()
 {
@@ -8056,16 +8064,21 @@
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
 
+
 $as_echo "#define AIX_GENUINE_CPLUSPLUS 1" >>confdefs.h
 
-			     { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+		  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
+
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+
+		  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
+
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext;;
@@ -9045,6 +9058,7 @@
 else
 
   if test "$cross_compiling" = yes; then :
+
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
   ipv6=no
@@ -9065,13 +9079,17 @@
 
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
+
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
   ipv6=yes
+
 else
+
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
   ipv6=no
+
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
   conftest.$ac_objext conftest.beam conftest.$ac_ext
@@ -9083,25 +9101,31 @@
 $as_echo_n "checking if RFC2553 API is available... " >&6; }
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <sys/types.h>
+
+	  #include <sys/types.h>
 #include <netinet/in.h>
 int
 main ()
 {
 struct sockaddr_in6 x;
-x.sin6_scope_id;
+			    x.sin6_scope_id;
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-		ipv6=yes
+	  ipv6=yes
+
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-		ipv6=no
+	  ipv6=no
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
@@ -9276,7 +9300,8 @@
 $as_echo_n "checking for OSX 10.5 SDK or later... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <Carbon/Carbon.h>
+
+  #include <Carbon/Carbon.h>
 int
 main ()
 {
@@ -9286,14 +9311,14 @@
 }
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
+  ]
+else
+
 
 $as_echo "#define HAVE_OSX105_SDK 1" >>confdefs.h
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
@@ -9533,7 +9558,7 @@
 
 $as_echo "#define HAVE_CHROOT 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9558,7 +9583,7 @@
 
 $as_echo "#define HAVE_LINK 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9583,7 +9608,7 @@
 
 $as_echo "#define HAVE_SYMLINK 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9608,7 +9633,7 @@
 
 $as_echo "#define HAVE_FCHDIR 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9633,7 +9658,7 @@
 
 $as_echo "#define HAVE_FSYNC 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9658,7 +9683,7 @@
 
 $as_echo "#define HAVE_FDATASYNC 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9683,7 +9708,7 @@
 
 $as_echo "#define HAVE_EPOLL 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9711,7 +9736,7 @@
 
 $as_echo "#define HAVE_KQUEUE 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9745,7 +9770,7 @@
 
 $as_echo "#define HAVE_CTERMID_R 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9774,7 +9799,7 @@
 
 $as_echo "#define HAVE_FLOCK 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -9803,7 +9828,7 @@
 
 $as_echo "#define HAVE_GETPAGESIZE 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -10123,7 +10148,7 @@
 
 $as_echo "#define HAVE_HSTRERROR 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -10156,7 +10181,7 @@
 
 $as_echo "#define HAVE_INET_ATON 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -10189,7 +10214,7 @@
 
 $as_echo "#define HAVE_INET_PTON 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -10222,7 +10247,7 @@
 
 $as_echo "#define HAVE_SETGROUPS 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -10499,7 +10524,6 @@
 
 $as_echo "#define GETPGRP_HAVE_ARG 1" >>confdefs.h
 
-
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
@@ -10528,7 +10552,6 @@
 
 $as_echo "#define SETPGRP_HAVE_ARG 1" >>confdefs.h
 
-
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
@@ -10988,6 +11011,7 @@
 if test "${ac_cv_header_time_altzone+set}" = set; then :
   $as_echo_n "(cached) " >&6
 else
+
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <time.h>
@@ -11005,6 +11029,7 @@
   ac_cv_header_time_altzone=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_time_altzone" >&5
@@ -11052,8 +11077,7 @@
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-
-#		include <netdb.h>
+#include <netdb.h>
 int
 main ()
 {
@@ -11295,11 +11319,9 @@
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
 
-
 $as_echo "#define HAVE_PROTOTYPES 1" >>confdefs.h
 
-  have_prototypes=yes
-
+   have_prototypes=yes
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_prototypes" >&5
@@ -11362,7 +11384,7 @@
 
 $as_echo "#define HAVE_SOCKETPAIR 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -11396,6 +11418,7 @@
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
@@ -11485,43 +11508,6 @@
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-#     include <netdb.h>
-
-int
-main ()
-{
-
-      char *name;
-      struct hostent *he;
-      char buffer[2048];
-      int buflen = 2048;
-      int h_errnop;
-
-      (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-
-      $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
-
-
-$as_echo "#define HAVE_GETHOSTBYNAME_R_5_ARG 1" >>confdefs.h
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-else
-
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 3 args" >&5
-$as_echo_n "checking gethostbyname_r with 3 args... " >&6; }
-      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
 #       include <netdb.h>
 
 int
@@ -11530,9 +11516,11 @@
 
         char *name;
         struct hostent *he;
-        struct hostent_data data;
+        char buffer[2048];
+        int buflen = 2048;
+        int h_errnop;
 
-        (void) gethostbyname_r(name, he, &data);
+        (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
 
   ;
   return 0;
@@ -11543,7 +11531,7 @@
         $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
 
 
-$as_echo "#define HAVE_GETHOSTBYNAME_R_3_ARG 1" >>confdefs.h
+$as_echo "#define HAVE_GETHOSTBYNAME_R_5_ARG 1" >>confdefs.h
 
         { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
@@ -11552,6 +11540,41 @@
 
         { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyname_r with 3 args" >&5
+$as_echo_n "checking gethostbyname_r with 3 args... " >&6; }
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#           include <netdb.h>
+
+int
+main ()
+{
+
+            char *name;
+            struct hostent *he;
+            struct hostent_data data;
+
+            (void) gethostbyname_r(name, he, &data);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+            $as_echo "#define HAVE_GETHOSTBYNAME_R 1" >>confdefs.h
+
+
+$as_echo "#define HAVE_GETHOSTBYNAME_R_3_ARG 1" >>confdefs.h
+
+            { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+else
+
+           { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
@@ -12821,6 +12844,7 @@
   have_readline=yes
 else
   have_readline=no
+
 fi
 rm -f conftest.err conftest.$ac_ext
 if test $have_readline = yes
@@ -12994,6 +13018,7 @@
   have_readline=yes
 else
   have_readline=no
+
 fi
 rm -f conftest.err conftest.$ac_ext
 if test $have_readline = yes
@@ -13442,7 +13467,7 @@
 
 $as_echo "#define HAVE_CURSES_IS_TERM_RESIZED 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -13468,7 +13493,7 @@
 
 $as_echo "#define HAVE_CURSES_RESIZE_TERM 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -13494,7 +13519,7 @@
 
 $as_echo "#define HAVE_CURSES_RESIZETERM 1" >>confdefs.h
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5