Put clicompat-r2.patch back in

We've figured out how to resolve the problems this was causing in 12/trunk,
so this can go back in now.

(issue ASTERISK-22467)
Reported by: Corey Farrell
Patches:
    clicompat-r2.patch uploaded by coreyfarrell (license 5909)
........

Merged revisions 401914 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 401935 from http://svn.asterisk.org/svn/asterisk/branches/11
........

Merged revisions 401936 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@401937 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils/clicompat.c

@@ -9,8 +9,18 @@ void ast_cli(int fd, const char *fmt, ...)
 
 struct ast_cli_entry;
 
+int ast_register_atexit(void (*func)(void));
+int ast_register_atexit(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)
 {
 	return 0;
 }
+int ast_cli_unregister_multiple(struct ast_cli_entry *e, int len);
+int ast_cli_unregister_multiple(struct ast_cli_entry *e, int len)
+{
+	return 0;
+}

utils/refcounter.c

@@ -314,9 +314,4 @@ void *__ast_bt_destroy(struct ast_bt *bt)
 void ast_log_backtrace(void)
 {
 }
-
-int ast_register_atexit(void (*func)(void))
-{
-	return 0;
-}
 #endif