Add in a patch to make busybox use the normal pwd.h and grp.h

functions.  Add in simple implementations of these functions,
which can, optionally, be used instead of the system versions.
 -Erik

include/grp.h

@@ -0,0 +1,47 @@
+#ifndef	__BB_GRP_H
+#define	__BB_GRP_H
+
+#if defined USE_SYSTEM_PWD_GRP
+#include <grp.h>
+#else
+
+#define bb_setgrent setgrent
+#define bb_endgrent endgrent
+#define bb_getgrent getgrent
+#define bb_getgrgid getgrgid
+#define bb_getgrnam getgrnam
+#define bb_fgetgrent fgetgrent
+#define bb_setgroups setgroups
+#define bb_initgroups initgroups
+#define __bb_getgrent __getgrent
+
+#include <sys/types.h>
+#include <features.h>
+#include <stdio.h>
+
+/* The group structure */
+struct group
+{
+  char *gr_name;		/* Group name.	*/
+  char *gr_passwd;		/* Password.	*/
+  gid_t gr_gid;			/* Group ID.	*/
+  char **gr_mem;		/* Member list.	*/
+};
+
+extern void bb_setgrent __P ((void));
+extern void bb_endgrent __P ((void));
+extern struct group * bb_getgrent __P ((void));
+
+extern struct group * bb_getgrgid __P ((__const gid_t gid));
+extern struct group * bb_getgrnam __P ((__const char * name));
+
+extern struct group * bb_fgetgrent __P ((FILE * file));
+
+extern int bb_setgroups __P ((size_t n, __const gid_t * groups));
+extern int bb_initgroups __P ((__const char * user, gid_t gid));
+
+extern struct group * __bb_getgrent __P ((int grp_fd));
+
+#endif /* USE_SYSTEM_PWD_GRP */
+#endif /* __BB_GRP_H */
+