Fix GD with git; update GD logging to match TT

BetweenMeals::Repo::SVN had diverged from the Git modules, bring
them back in sync.

Also, TT's logging has changed, bring GD inline.

Addresses #29.
Merge pull request #31 from jaymzh/fix_gd_with_git

Fix GD with git; update GD logging to match TT