InitializeConnections works on serving tablet types only.
Add note about setting VT_MYSQL_ROOT if necessary.
Fix logic in InitializeConnections
Merge branch 'liguo'
bug fix in schema reload

Now that schema reloads can be triggerred within
one second, we have to conservatively include the
last second to account for the lost granularity.
Merge branch 'master' into rowcache
Merge branch 'master' of github.com:youtube/vitess
vtgate: add panic handling for public functions
Add MultiSnapshot and MultiRestore events.
Merge branch 'suguwork'
optimize vertical_split.py test

We don't need to wait one second for the schema updates
any more since reload schema can handle these now.