Updates to a number of apps to remove warnings/compile errors under libc5.

Tested under both libc5 and libc6 and all seems well with these fixes.
 -Erik

modutils/rmmod.c

@@ -75,5 +75,5 @@ extern int rmmod_main(int argc, char **argv)
 		}
 		argv++;
 	}
-	exit(TRUE);
+	return(TRUE);
 }