redis 7.x-3.3

This is a maintainance release that fixes a couple of bugs, including one very important: some cache items were not invalidated when created, deleted then recreated at the exact same second. This was due to a wrong timestamp check. Note that the actual fix might cause some modules to see invalid cache entries when they are rebuilt and loaded the exact same second, but major side effects are now solved and behavior is safe. This is mitigated by the fact this scenario might only happen when doing heavy rebuilding operations, such as features revert or menu rebuild.

Full changelog:

• Issue #2454303: Update README.PhpRedis.txt and project page about PhpRedis
• Issue #2431443 by mdupont: ::clear() method should accept an array as first parameter per signature
• Flush and get the exact same second must be considered as invalid: this mostly caused troubles when doing heavy cache rebuilds, such as when reverting features or rebuilding menu.