yiisoft/yii — pull request #1146 by senz (2012-08-06 12:24:45+00:00)
Title: CFileHelper::copyDirectory recursive mkdir.

In case of dstDir deeper than 1 level we must create it recursively as CFileHelper::copyDirectory docblock says:
> * Copies a directory recursively as another.
> * If the destination directory does not exist, it will be created.