Merge branch 'master' of https://github.com/wdw1206/Mycat-Server
fixed NullPointerException on execution select next value for MYCATSEQ_XXX
Merge branch 'master' of https://github.com/MyCATApache/Mycat-Server
Merge pull request #49 from runfriends/master

FIXED NullPointerException on execution select next value for MYCATSEQ_XXXX
Merge pull request #50 from wdw1206/master

主键缓存找到路由就退出当前循环，防止后面走其他逻辑导致路由错误。
fix reload bug
Merge remote-tracking branch 'origin/master'
Merge pull request #51 from opencloudb/master

fix reload bug
change cmd to volatile ,maybe changed and can't see
Merge pull request #52 from wdw1206/master

1、druidparser支持无表的select语句，如select 1或select 1 union select2
Merge remote-tracking branch 'origin/master'
Merge pull request #53 from wdw1206/master

fixed：解析器切换不成功，两种解析器共享变量导致单元测试跑不通
Mysql 连接同步优化，以及修改Timeout 超时的问题
Insert测试代码缺陷修复
Merge pull request #56 from opencloudb/master

Mysql 连接同步优化，以及修改Timeout
checkWriteBuffer可能分配不够的空间，存在潜在Bug
Merge pull request #57 from opencloudb/master

checkWriteBuffer可能分配不够的空间，存在潜在Bug
修复查询测试的代码，ID范围问题
Merge pull request #59 from opencloudb/master

修复查询测试的代码，ID范围问题
批量insert计算路由时，字符串的值多了单引号