Memcached Plugin

Hi,

Just pushed to master that exposes elasticsearch REST protocol over
memcached protocol. Seems like it can give better performance over HTTP when
used. Here is the issue:
http://github.com/elasticsearch/elasticsearch/issues/issue/141.

As a side note, it does impose some restrictions. I am currently looking
for a binary REST protocol, or something similar, that will expose the full
power of REST over a well known protocol. My belief is that the memcached
client libs are simply implemented much better when compared to the http
counterparts (there shouldn't really be such a big different as we see in
perl for example).

cheers,
shay.banon