[TASK] Squeeze every bit of performance from CGL fixer

This patch reduces the amount of time required to check
CGL to less than 3% of what it was before when xdebug
is loaded and the script is asked to check ~100 files.

Time before: 17m
Time after: 23.3s

Change-Id: I533ac3bfd03922362ccd6180caf6df2bfecd5bac
Releases: master, 8.7
Resolves: #80814
Reviewed-on: https://review.typo3.org/52417


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Philipp Gampe <philipp.gampe@typo3.org>
Tested-by: Philipp Gampe <philipp.gampe@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>