fetch bucket configuration over memcached binary protocol

[ingenthr]

In order to adjust to changing cluster topology in a lower-latency, more reliable fashion the sync_gateway should use the memcached binary protocol method of getting the configuration instead of the old HTTP streaming method.

This is part of project CCCP, as covered at http://www.couchbase.com/wiki/display/couchbase/Cluster+Configuration+Carrier+Publication

[snej]

The sync gateway itself doesn't know anything about server topology. That's handled by the go-couchbase package it uses. You should file this issue against that repo.