Deprecation: #82702 - Second argument of GeneralUtility::mkdir_deep() 

See forge#82702

Description 

The second option of TYPO3\CMS\Core\Utility\GeneralUtility::mkdir_deep() has been marked as deprecated.

Impact 

Calling this method with a second argument which is not empty, will trigger a deprecation entry.

Affected Installations 

Any installation with a third-party extension calling this method with two arguments.

Migration 

Instead of calling GeneralUtility::mkdir_deep(PATH_site . 'typo3temp/', 'myfolder'); the simple syntax GeneralUtility::mkdir_deep(PATH_site . 'typo3temp/myfolder'); can be used directly, also in TYPO3 v8 and before already.