WIP: now the data copy works, just not efficient.
Merge branch 'master' into replication
Merge branch 'master' into replication
VTTablet: fix some lint warnings
Merge branch 'master' into replication
Finishing up clone worker.
Docs: slightly reorganize README.
Few more tweaks to vertical split clone:

- can now read a table in multiple chunks based on primary key ranges.

- added parameters for all interesting values.

- limit source concurrency with a semaphore.
Revert VTGate protocol independent change
Make Context an interface

Also add an implementation for GoRPCContext
Adding stats and display to online clone.
Merge branch 'reorganize-readme'
Adding vtworker worker return status.

And returning it in vtworker. That way we would have realized
vtworker in actually failing in google3 all the time.
Fixing the underlying reason, topo args were not set properly.
Merge branch 'master' of github.com:youtube/vitess
Merge branch 'master' into replication
Adding ETA computation to worker.
Disabling logging of non-critical RPCs, otherwise the SQL
RPCs for data copy would also be logged, and spam the logs.
VTTablet: On query terminate kill MySQL conn
Now we can specify the interval between logs.
Small cleanups in binlogplayer.

I want the blp_checkpoint table to be only referenced from
binlogplayer module.