Generate TabletChange events.
make vtgate topo agnostic

Topo server support is controlled by plugins. Not everyone needs
zookeeper support.
Add unit tests for Syslog() translation functions.
Merge pull request #66 from plobsing/topo-agnostic

make vtgate topo agnostic
Skip long tests in "go test -short" mode.
Add GTID interface and implement for Google MySQL and MariaDB.
Run goimports.
Add MasterCell to SrvShard
Merge branch 'master' into liguo
Add debug info for KeyRange
Parser: Set table names for DDLs
Table ACL: configuration file based access checker
Parser: Skip tableInfo for tables not in schema
Table ACL: Authenticate a real user in tests