Fix race in multiraft test by calling Advance at the correct time.
Add detailed raft logging at V(5).
Update raft submodule
Google renamed download directory for releases.

The releases now have a 'v' as part of the version number for the
directory name.
Merge pull request #199 from jamesgraves/protobuf_download_moved

Download directory name for protobuf releases.
ignore ssl cert for curl in bootstrap

fixes #182
add install via "go get -d"
no-op change to un-confuse race detector (unless the race is real)

maybe fixes #201
Merge pull request #202 from tschottdorf/vndr

minor fixes
Restore cert validation in bootstrap.sh
Merge pull request #203 from bdarnell/bootstrap-validate-certs

Restore cert validation in bootstrap.sh
Merge pull request #195 from bdarnell/race-fix

Fix race in multiraft test by calling Advance at the correct time.
Add InternalMerge Command

Add the InternalMerge command, which is replacing the anticipated (but never
implemented) AccumulateTS command.  InternalMerge is similar to a put in that it
writes a single value to a key - however, the supplied value is *merged* into
the existing value instead of replacing it.

Merging is not transactional, and thus it is only exposed internally for usage
in certain operations which require a high write performance (such as the
accumulation of time series data).