* Remove putMessage/putMessages method in CommitLog which has too many duplicated code.

* Optimise performance of asyncPutMessage (extract some code out of putMessage lock)

* extract generation of msgId out of lock in CommitLog (now only for single message processor)

* extract generation of topicQueueTable key out of sync code

* extract generation of msgId out of lock in CommitLog (for batch)

* fix ipv6 problem introduced in commit "Optimise performance of asyncPutMessage (extract some code out of putMessage lock)"

[ISSUE #3066]producing a ghost consumer at frequently start and stop consumers in one process

[ISSUE #2715] make netty parameter configure by system property

[ISSUE #3031] Upgrade netty-all dependency version to 4.1.65.Final

[ISSUE #2990] Add message tracing switch in sendMessage command of mqadmin, and add document

[ISSUE #2055] Fix NPE in SendMessageProcessor.handleRetryAndDLQ

[ISSUE #3023] Fix the inconsistency of putMessageDistributeTime statistics

[ISSUE #3021] Improve the comment of maxReconsumeTimes.

[ISSUE #3162 ]add msgTraceEnable config in transaction producer benchmark

[ISSUE #2708] fix offset rollback when fetch offset from broker exception

[ISSUE #3164]Fix the checkstyle error

[ISSUE #3046]:Polish lite pull consumer code style

[ISSUE #3154 ]delete the unuse code

[ISSUE #3128] fix the delete global white addresses

[ISSUE #3141]fix spell error

Add SyncProducer Example

[ISSUE #603] Log exception stack

[ISSUE #3037]Add a Chinese version of Deployment.md

[ISSUES #3055]add some doc of the API_Reference_DefaultMQProducer of English.

[ISSUE #3063] add Chinese version of Example_Delay.md

[ISSUES #3061 #3065]add different send examples and chinese version of FAQ.md

[ISSUE #3097] docs remove obsolete/error configuration

[ISSUE #3123]fix namesrv endpoint

[ISSUE #3099] Fix the incorrect judegment  'writePos - lastCommittedPosition > commitLeastPages' in the method 'commit0' of class 'MappedFile' (#3125)

[ISSUE #3110]Fix: remove useless code 

[Part C] Improve produce performance in M/S mode.

* Optimise lock in WaitNotifyObject

* Remove lock in HAService

* Remove lock in GroupCommitService

[ISSUE #3130]Add trace format test case