Patch #497098: build support for GNU/Hurd.
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 40cb00d..abcdead 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -93,6 +93,12 @@
 /* Define if you have the Mach cthreads package */
 #undef C_THREADS
 
+/* Define if you are using Mach cthreads under mach / */
+#undef MACH_C_THREADS
+
+/* Define if you are using Mach cthreads directly under /include */
+#undef HURD_C_THREADS
+
 /* Define to `long' if <time.h> doesn't define.  */
 #undef clock_t
 
@@ -121,6 +127,9 @@
 /* struct addrinfo (netdb.h) */
 #undef HAVE_ADDRINFO
 
+/* Define if you have the getaddrinfo function. */
+#undef HAVE_GETADDRINFO
+
 /* struct sockaddr_storage (sys/socket.h) */
 #undef HAVE_SOCKADDR_STORAGE
 
@@ -402,9 +411,6 @@
 /* Define if you have the gai_strerror function.  */
 #undef HAVE_GAI_STRERROR
 
-/* Define if you have the getaddrinfo function.  */
-#undef HAVE_GETADDRINFO
-
 /* Define if you have the getcwd function.  */
 #undef HAVE_GETCWD