Create a release version for open source users

1. Redis dr support
2. Oversea datacenter support

0.2.2

meta server:
1. DefaultSlaveOf
2. add keeper interval 15s
keeper
1. cat monitor
2. half rdb received case handle

slaveof instead of "transactional slave of"

psync2 support

handle \r\n, sentinel do not die when monitor master with keeper

1、replication store concurrent read/destroy

2、controllable file concurrent open, may lose some data
3、commandstore: create file after rotate file

1. 2.8.19 support

2. avoid diskless sync wait forever

console support dc change situations

1. eofmark support

2. InetSocketAddress getHostName

Merge branch 'master' of github.com:ctripcorp/x-pipe