drover: switch to use optparse, and add the arguments to be able to support
the revert bot.
Review URL: http://codereview.chromium.org/294005
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@29446 0039d316-1c4b-4281-b951-d872f2087c98
the python code we have. 90% of the changes are removing
trailing spaces.
Review URL: http://codereview.chromium.org/282014
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@29312 0039d316-1c4b-4281-b951-d872f2087c98