nsqd: return output_buffer_* in IDENTIFY response
Merge pull request #479 from mreiferson/nsqd_output_buffer_479

nsqd: return output buffer settings in IDENTIFY response
util: speed up failure path of ByteToBase10
Merge pull request #505 from iand/master

util: speed up failure path of ByteToBase10
apps/nsq_stat: add rate status
Merge pull request #507 from xiaost/nsq-stat-add-rate-status

apps/nsq_stat: add rate status