* lib/groupio.h, lib/prototypes.h, lib/pwio.h, lib/sgetgrent.c:

Include <sys/types.h> before <pwd.h> and <grp.h>. It is necessary
	for the definition of uid_t and gid_t.
	* lib/pwmem.c: do not include <pwd.h>, "pwio.h" is sufficient
	here.

lib/pwio.h

@@ -35,7 +35,9 @@
 #ifndef _PWIO_H
 #define _PWIO_H
 
+#include <sys/types.h>
 #include <pwd.h>
+
 extern int pw_close (void);
 extern const struct passwd *pw_locate (const char *name);
 extern const struct passwd *pw_locate_uid (uid_t uid);