Memceache tests have been disabled because of
problems with the travis ci service.

Activate them again after the problems have been
resolved and also activate PHPUnit color output.

Releases: 6.0

Change-Id: I8f488c499884e36c03736844f5325ad57deeecc5
Reviewed-on: http://review.typo3.org/16179
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel