1.bugfix of log discontinuous
2.enhance cli
3.set MAX_LINE_SIZE limitation
4.improve memory malloc in logreader
enhance cli
1.limit range recovery threads one time
2.add rmconf command
correct codes for pull request review 26b800e
some optimizations:
1. Decouple collectornode port from supervisor
2. remove MISSED status of stage
3. recorrect some incompatible protocols of PB
bugfix: add a time buffer to avoid generating incorrect rollIdent due to clock unsynchronization.
Merge pull request #70 from LantaoJin/timebuf_bug

Timebuf bug and so on
Merge pull request #15 from dianping/master

sync