Fixed 1760256 - Unit tests fail while using Redis cache
Fixed 1760256 - Documentation fixes, predis client interface setting is now optional
Fixes #2112863 - reported and authored by das-peter - fatal error in PhpRedis lock implementation when WATCH command fails
Documented that the module is only supported for Redis >= 2.4
#1980250 - Reported and authored by caiosba and Island Usurper - Redis module was deleting permanent cache items during cron calls due to a wrong switch statement in code
Merge remote-tracking branch 'origin/7.x-2.x' into 7.x-2.x-o8