In order to move away from using hard-coded constants,
the Environment class method "isWindows" is used.

Resolves: #84854
Releases: master
Change-Id: I30bc72017d00caafe9dfef912c52044a6cd03338
Reviewed-on: https://review.typo3.org/56792


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>