Add ExecuteEntityIds() to VTGate V2
Fixing race conditions in zkconn.

A client might be getting a conn from metaconn, and then
use it for queries. It might get closed at the same time.
So it needs to be protected by a mutex.
Merge branch 'master' into replication
Merge branch 'master' into liguo
Allowing multiple Close in zkconn.
Merge branch 'master' of github.com:youtube/vitess
servenv: support for lameduck-period
Merge branch 'master' into monitoring
test env fix
Fixing typo in bson encoding of ZK stats.
Merge branch 'master' of github.com:youtube/vitess
servenv: Add comments to functions.
servenv: reduce default lameduck period

Since most tests don't set lameduck period, a high value will
most likely break them all. So, it's good to set this to something
very small.
Merge branch 'master' into monitoring
servenv: move some code around

Better reuse on import