audit small applets and mark some of them as NOFORK.

Put big scary warnings in relevant places.

coreutils/rmdir.c

@@ -10,11 +10,12 @@
 /* BB_AUDIT SUSv3 compliant */
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/rmdir.html */
 
-#include <stdlib.h>
-#include <unistd.h>
 #include <libgen.h>
 #include "busybox.h"
 
+/* This is a NOFORK applet. Be very careful! */
+
+
 int rmdir_main(int argc, char **argv);
 int rmdir_main(int argc, char **argv)
 {
@@ -24,7 +25,6 @@ int rmdir_main(int argc, char **argv)
 	char *path;
 
 	flags = getopt32(argc, argv, "p");
-
 	argv += optind;
 
 	if (!*argv) {
@@ -37,7 +37,7 @@ int rmdir_main(int argc, char **argv)
 		/* Record if the first char was a '.' so we can use dirname later. */
 		do_dot = (*path == '.');
 
-		do {
+		while (1) {
 			if (rmdir(path) < 0) {
 				bb_perror_msg("'%s'", path);	/* Match gnu rmdir msg. */
 				status = EXIT_FAILURE;
@@ -53,7 +53,7 @@ int rmdir_main(int argc, char **argv)
 				}
 			}
 			break;
-		} while (1);
+		}
 
 	} while (*++argv);