[BUGFIX] Autoloader Cache is not updated

The patch adds the current TYPO3 version to the cache identifier.
This ensures a new cache file if upgrading TYPO3.

Change-Id: I4fa47178016925f39ff2168f65afb1ae357be556
Resolves: #28589
Reviewed-on: http://review.typo3.org/3903
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Susanne Moog
Tested-by: Susanne Moog