PECP multi-server support

[Timo Ewalds]

I finally tried out the PECL PHP client, and was rather impressed with 
it's speed. It is about double as fast as the pure php version I posted 
before. Unfortunately it doesn't support multiple servers, which makes 
it a bit useless to me. I therefore wrote a wrapper class that handles 
multiple Memcache objects, hashes the keys, and passes the real work on 
to the correct Memcache object. It is a drop in replacement for my other 
php client. The overhead does slow it down, but it is still alot faster 
than the pure php version.

You can download both of them here:
http://www.uniphire.com/memcache/

Timo