[TASK] Make SQL Schema Parser aware of combined indexes

The patch fix problems with multiple parenthesis. e.g.
uid_foreign,tablenames(255),fieldname(255),sorting_foreign

Resolves: #66738
Releases: master
Change-Id: I49abc597e9c325a22d49c3d76355ecadec30a35d
Reviewed-on: http://review.typo3.org/39786


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>