Add the commands rm and rmdir to init.

rm only removes a single non-directory directory entry (no -r support)
rmdir removes a single empty directory

Change-Id: I49702b02ba98a177027b126268c2c2846f968195
diff --git a/init/init_parser.c b/init/init_parser.c
index 00e6b9e..0898ae8 100644
--- a/init/init_parser.c
+++ b/init/init_parser.c
@@ -125,6 +125,8 @@
         break;
     case 'r':
         if (!strcmp(s, "estart")) return K_restart;
+        if (!strcmp(s, "mdir")) return K_rmdir;
+        if (!strcmp(s, "m")) return K_rm;
         break;
     case 's':
         if (!strcmp(s, "ervice")) return K_service;