New: Redis cache provider

[Jorge]

For those of you who haven't heard the buzz, or drank the Koolaid,
Redis is
a fast key value store where the values can be not only strings, but
lists and hashes,
and the data is not volatile.

http://code.google.com/p/redis/

You can now use Redis as your second level cache. Get it here:
https://github.com/boxerab/NHRedis

In this release, it simply mimics memcached. But, I am hoping to
eventually use
some of the cooler Redis features, like lists and locks. NHibernate
currently does not
have a distributed cache provider that supports a strict read-write
cache, so I think Redis could provide
this (almost).

This is a very alpha version: it passes all NUnit tests, but may have
problems when running with
NHibernate. So, please, try to break it if you have some time :)

And thanks to Demis Bellot for his excellent ServiceStackRedis .NET
client.

Cheers,
Jorge