[BUGFIX] Improve test class detection in ClassLoadingInformationGenerator

Currently class names ending with test or fixture suffix are excluded
from the autoload classmap generation. Unfortunately this skips valid
class names like Tx_RedirectTest_Domain_Model_Test as well. This patch
improves the decision if class name can be skipped by assuming there is
an alphabetic character in front of the suffix.

Furthermore generation of the class map is skipped if a valid psr-4
annotation is found in the package information.

Resolves: #69710
Releases: master
Change-Id: Id433294f982f39b438b10393fda2c468cd1518fd
Reviewed-on: http://review.typo3.org/43231


Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>