binlog: Add support to write StopEvent in MockLogFile
binlog: Add support to write StopEvent in MockLogFile

horryq/godropbox,wangtuanjie/godropbox,pattyshack/godropbox,wfxiang08/godropbox,icattlecoder/godropbox,icattlecoder/godropbox,abduld/godropbox,pattyshack/godropbox,abduld/godropbox,icattlecoder/godropbox,cch123/godropbox,wfxiang08/godropbox,dropbox/godropbox,pattyshack/godropbox,zj8487/godropbox,dropbox/godropbox,wangtuanjie/godropbox,wangtuanjie/godropbox,zj8487/godropbox,sixolet/godropbox,danielrh/godropbox,cch123/godropbox,wfxiang08/godropbox,sixolet/godropbox,dropbox/godropbox,gc-locks/gosqlbuilder,cch123/godropbox,zj8487/godropbox,horryq/godropbox,danielrh/godropbox,abduld/godropbox,sixolet/godropbox,danielrh/godropbox,horryq/godropbox