WIP for ShardReplication object.
Now adding support for removing rep. paths.
Adding unit tests for new topo functions.
Adding log message
Cosmetic changes.
Merge branch 'master' into resharding
Merge branch 'master' into resharding
Renaming VtnsAddr to Endpoint.
Add info about how to contact us.
Merge branch 'master' into barnacle
Adding code to copy ShardReplication objects.
Merge branch 'master' of github.com:youtube/vitess
Barnacle server & client.
add vtbarnacle to bootstrap.sh & Makefile
Merge branch 'master' into barnacle