Controller类增加batchValidate属性 validate方法增加batch参数，用于设置是否批量验证

异常类改进

library/think/exception/ClassNotFoundException.php

@@ -13,4 +13,20 @@ namespace think\exception;
 
 class ClassNotFoundException extends \RuntimeException
 {
+	protected $class;
+	public function __construct($message,$class='')
+	{
+		$this->message 	= $message;
+		$this->class 	= $class;
+	}
+
+    /**
+     * 获取类名
+     * @access public
+     * @return string
+     */
+	public function getClass()
+	{
+		return $this->class;
+	}
 }