improved rocache spot check
knob for spot-checking
wait longer for memcache & fail fatally on failure
don't store rows with long keys in rowcache
temp fix vtctl to allow import
increase grace period for spot checks to 10s
timings bug fix for TotalTime
temp workaround for connection count issue
add FIXME comment.
fix test
abort streaming queries on shut down.
Changing filtered replication to non-SUPER user.

This now works as we allow regular users to set
timestamps.