* lib/defines.h: Do not include <config.h>. This complicate

undefining some configuration macros when the file is included
	multiple times.
	* libmisc/xgetXXbyYY.c, libmisc/xgetpwnam.c, libmisc/xgetpwuid.c,
	libmisc/xgetgrgid.c, libmisc/xgetgrnam.c, libmisc/xgetspnam.c:
	Include <config.h> from teh compiled C file, not the included
	getXXbyYY.c.

libmisc/xgetpwnam.c

@@ -49,6 +49,8 @@
  * This file provide wrapper to the getpwnam or getpwnam_r functions.
  */
 
+#include <config.h>
+
 #include "pwio.h"
 
 #define LOOKUP_TYPE	struct passwd