[FEATURE] Multiple params for user function in typoscript conditions.

Currrently you can use user functions for typoscript conditions and
pass one parameter to your created functions. If you have more than
parameter, you must create a workaround and use an delimiter other
than comma an split it up in your user functions to separate them.

This patch is a fix for that and make it possible to use multiple params
for user functions.

Change-Id: Ief2486f6133132303a5925370c1517ee9a98a0b4
Resolves: #47159
Releases: 6.2
Reviewed-on: https://review.typo3.org/19835
Reviewed-by: Dmitry Dulepov
Tested-by: Dmitry Dulepov
Reviewed-by: Daniel Hürtgen
Tested-by: Daniel Hürtgen
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring