Fix compile errors caused by r4500 / r4501.

* Add ast_register_cleanup to utils/clicompat.c to deal with
  any utils that copy sources from main.
* Asterisk 13+: remove unused variables from core_local.c.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@433499 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils/clicompat.c

@@ -14,6 +14,13 @@ int ast_register_atexit(void (*func)(void))
 {
 	return 0;
 }
+
+int ast_register_cleanup(void (*func)(void));
+int ast_register_cleanup(void (*func)(void))
+{
+	return 0;
+}
+
 int ast_cli_register_multiple(struct ast_cli_entry *e, int len);
 int ast_cli_register_multiple(struct ast_cli_entry *e, int len)
 {