Initial TopoServReader work: GetKeyspaces.
vtctl UpdateTabletAddrs command.
TopoReader methods: GetSrvKeyspace, GetEndPoints.
FIXME note.
Use a struct as the reply type in Toporeader.GetKeyspaces.
Allow percents of failure for external reparent.
TopoReader is now an interface in topo.
Merge pull request #23 from youtube/sougou-work

createcl: tool for uploaded code review to appspot
Merge branch 'master' of github.com:youtube/vitess into reparent-fix
Merge branch 'topoocc'

Conflicts:
	go/cmd/vtctl/vtctl.go
Merge pull request #22 from youtube/reparent-fix

Allow percents of failure for external reparent.
Refactor InitTablet to take options.
Support scrap master in ShardExternallyReparented.
Merge pull request #24 from youtube/reparent-fix

Support scrap master in ShardExternallyReparented.
Merge remote-tracking branch 'origin/master' into refactor-init-tablet
Simplify InitTablet.
Remove extra replication path on external reparent
Using TabletAlias.IsZero) and Shard persistence.
Updating vtctld to support plugged-in topos.
New version of the Python zkocc API.