[BUGFIX] Add stdWrap support for Partial- and layoutRootPaths

The single occurrences layoutRootPath and partialRootPath have
stdWrap support, but not the collection entries of
layoutRootPaths and partialRootPaths. This is added now.

Change-Id: I59d4967ce67b48b53e9bf1052d703c974f1472ca
Resolves: #63380
Releases: master, 6.2
Reviewed-on: http://review.typo3.org/41584


Reviewed-by: Oliver Eglseder <oliver.eglseder@in2code.de>
Tested-by: Oliver Eglseder <oliver.eglseder@in2code.de>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>