Bug#37453: Dropping/creating index on partitioned table with

InnoDB Plugin locks table

This is a pre fix update that does the change to the handler api.

This is done since there are already changes in this version,
so the real fix does not need to change the api.

sql/handler.h

@@ -1732,6 +1732,12 @@ class handler :public Sql_alloc
     but we don't have a primary key
   */
   virtual void use_hidden_primary_key();
+  virtual uint alter_table_flags(uint flags)
+  {
+    if (ht->alter_table_flags)
+      return ht->alter_table_flags(flags);
+    return 0;
+  } 
 
 protected:
   /* Service methods for use by storage engines. */