[FEATURE] XML parser options for xml2tree()

Allow parser-options for xml_parser_set_option() to
be supplied.

Resolves: #59384
Releases: master
Change-Id: I656b36f6252e7dce4ed94e4b9b916dec0fbe884f
Reviewed-on: http://review.typo3.org/30973


Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>