New CLI command "Core show settings" to list some core settings

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@54464 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/config.c

@@ -1384,6 +1384,12 @@ int ast_check_realtime(const char *family)
 
 }
 
+/*! \brief Check if there's any realtime engines loaded */
+int ast_realtime_enabled()
+{
+	return config_maps ? 1 : 0;
+}
+
 struct ast_config *ast_load_realtime_multientry(const char *family, ...)
 {
 	struct ast_config_engine *eng;