single BLPOP and BRPOP command should be able to block on multiple keys [PATCH]

[plastictrophy]

Currently, redis-rb only allows blocking-pop commands to block against a single key. The Redis protocol is designed to allow a single command to block against several keys, which we rely on in our fork of Resque that uses blocking-pop rather than polling.

Here's our patch, test included:

http://github.com/plastictrophy/redis-rb/commits/bpop_on_keys

[soveran]

Thanks! Send me a pull request from that commit and I'll apply it.