nsqd: IDENTIFY should respond with materialized msg_timeout
Merge pull request #428 from mreiferson/fix_msg_timeout_428

nsqd: msg_timeout for clients pre 0.2.28
nsqlookupd: move registrationdb to util
nsqd: use Serf for gossip
registrationdb: consolidate Producer and PeerInfo
wip rebroadcast
fixup nsqd rebase
reconnect
add HTTPS port