取消memcache每次的检查server

@@ -29,6 +29,10 @@ class Util_Server_Adapter_CheckServer {
      * @return bool
      */
     public static function check( $host, $port = '3306', $type = 'db') {
+		if('memcache' == $type){
+			return true;
+			
+		}
         if( empty ($host) || empty ($port) || empty ($type) ) {
             throw new Util_Server_Exception ('下列参数不合法: host:'.$host.' port:'.$port.' type:'.$type  );
         }