[TASK] Use variable argument-lists instead of func_get_args()

Supported since PHP 5.6. This makes the code easier to read
and allows to properly document using phpdoc.

https://secure.php.net/manual/en/functions.arguments.php#functions.variable-arg-list

Change-Id: Id04f768635eba7c70f1ea5ba6a7c01d00cb9fafc
Resolves: #72071
Releases: master
Reviewed-on: https://review.typo3.org/45143


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>