[bug #231] check and include stdint.h, also add std=c99 to gcc CFLAGS

2005-11-14 Paul Jakma <paul.jakma@sun.com>

	* configure.ac: Tell gcc we like C99.
	  [bug #231] Check and test for stdint.h.
	* lib/zebra.h: [bug #231] include stdint, if its there.
diff --git a/lib/zebra.h b/lib/zebra.h
index 1739d77..0aa98a4 100644
--- a/lib/zebra.h
+++ b/lib/zebra.h
@@ -82,6 +82,9 @@
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
 #endif /* HAVE_LIMITS_H */
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif /* HAVE_STDINT_H */
 
 /* machine dependent includes */
 #ifdef SUNOS_5