[tests] Fix base test case class to handle required Redis versions.
[tests] Fix base test case class to handle required Redis versions.

This change is needed due to some internal changes in one of the
latest minor releases of PHPUnit 4.x that essentially broke how we
were checking for the required Redis version from method annotations.

Conflicts:
	tests/PHPUnit/PredisTestCase.php

channelgrabber/predis