Modifies Git Module `glg` for more relevant info.

The old style added too much uneeded white space, it also didn't show
the comitter's name & time of the commit.

Example of how it looks:
https://dl.dropbox.com/s/j4ybllu0l2j8rrg/2013-05-10_at_7.47.47_PM%20%281%29.png