改进Handle类支持异常的多语言 Lang类增加has方法 增加核心中文语言包

library/think/cache/driver/Redisd.php

@@ -84,7 +84,7 @@ class Redisd
     public function __construct($options = [])
     {
         if (!extension_loaded('redis')) {
-            throw new \BadFunctionCallException('not support redis');
+            throw new \BadFunctionCallException('not support: redis');
         }
 
         $this->options         = $options         = array_merge($this->options, $options);