[PATCH 6/10] Fix header breakage with _XOPEN_SOURCE.

convert-objects.c sets _XOPEN_SOURCE and _XOPEN_SOURCE_EXTENDED before
including <time.h>, in order to get the declaration of strptime().
This leads to breakage in cache.h, due to S_ISLNK and S_IFLNK no longer
being defined by <sys/stat.h>.  These definitions are protected by the
__USE_BSD symbol, which is not set when _XOPEN_SOURCE is set.  Moving
the #defines and #include <time.h> below all other #includes does not
fix the problem, however, since now _USE_XOPEN, which protects the
declaration of strptime(), is now not defined (don't ask!).

The fix is to #define _GNU_SOURCE, which enables the definition of
practically everything.

Signed-off-by: Ramsay Allan Jones <redacted>
---
 convert-objects.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/convert-objects.c b/convert-objects.c
index 0fabd89..971ad6d 100644
--- a/convert-objects.c
+++ b/convert-objects.c

@@ -1,5 +1,6 @@
 #define _XOPEN_SOURCE 500 /* glibc2 and AIX 5.3L need this */
 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
+#define _GNU_SOURCE
 #include <time.h>
 #include "cache.h"
 #include "blob.h"

-- 
1.4.1