Remove the problematic and unneeded AST_MODFLAG_GLOBAL_SYMBOLS from pbx_lua.c

AST_MODFLAG_GLOBAL_SYMBOLS was causing the module to be incorrectly loaded
before pbx_config.  pbx_config was therefore blowing away contexts that were
created by pbx_lua.  With AST_MODFLAG_DEFAULT the load order is now correct
and contexs are being properly merged.  AST_MODFLAG_GLOBAL_SYMBOLS was not
needed anyway since no other modules needed its global symbols that early.

ASTERISK-23818 #close
Reported by: Dennis Guse
Tested by: Dennis Guse
Tested by: George Joseph

Review: https://reviewboard.asterisk.org/r/3629/


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@416668 65c4cc65-6c06-0410-ace0-fbb531ad65f3

pbx/pbx_lua.c

@@ -1637,6 +1637,9 @@ static int load_or_reload_lua_stuff(void)
 		res = AST_MODULE_LOAD_DECLINE;
 	}
 
+	if (!res) {
+		ast_log(LOG_NOTICE, "Lua PBX Switch loaded.\n");
+	}
 	lua_close(L);
 	return res;
 }
@@ -1646,6 +1649,7 @@ static int unload_module(void)
 	ast_context_destroy(NULL, registrar);
 	ast_unregister_switch(&lua_switch);
 	lua_free_extensions();
+	ast_log(LOG_NOTICE, "Lua PBX Switch unloaded.\n");
 	return 0;
 }
 
@@ -1669,7 +1673,7 @@ static int load_module(void)
 	return AST_MODULE_LOAD_SUCCESS;
 }
 
-AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS, "Lua PBX Switch",
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Lua PBX Switch",
 		.load = load_module,
 		.unload = unload_module,
 		.reload = reload,