fix for old kernels which don't have epoll_create1
diff --git a/configure b/configure
index 455e62a..7cd7e91 100755
--- a/configure
+++ b/configure
@@ -9606,6 +9606,31 @@
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for epoll_create1" >&5
+$as_echo_n "checking for epoll_create1... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/epoll.h>
+int
+main ()
+{
+void *x=epoll_create1
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_EPOLL_CREATE1 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
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for kqueue" >&5
$as_echo_n "checking for kqueue... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -14564,8 +14589,8 @@
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
# Files that config.status was made for.
-config_files="`echo $ac_config_files`"
-config_headers="`echo $ac_config_headers`"
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
_ACEOF