CBD-293: ignore config.cache
CBD-293: ignore config.cache

Change-Id: I55cef1d5f562680556de579c1e5db17ac81e1d6c
Reviewed-on: http://review.couchbase.org/16452
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

abhinavdangeti/memcached,mrkwse/memcached,daverigby/memcached,cloudrain21/memcached-1,mrkwse/memcached,cloudrain21/memcached-1,couchbase/memcached,daverigby/kv_engine,couchbase/memcached,couchbase/memcached,owendCB/memcached,daverigby/memcached,cloudrain21/memcached-1,owendCB/memcached,owendCB/memcached,daverigby/kv_engine,abhinavdangeti/memcached,jimwwalker/memcached,mrkwse/memcached,jimwwalker/memcached,daverigby/memcached,daverigby/kv_engine,cloudrain21/memcached-1,abhinavdangeti/memcached,daverigby/kv_engine,owendCB/memcached,abhinavdangeti/memcached,daverigby/memcached,jimwwalker/memcached,couchbase/memcached,mrkwse/memcached,abhinavdangeti/memcached