Use my own cbsasl branch

Change-Id: I58627aa6530d852ede3e5dd6da095f51f42c3fb9
Reviewed-on: http://review.couchbase.org/29251
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>