Also adding unit tests.
TEST=new unit tests
BUG=none
TBR=nsylvain
Review URL: http://codereview.chromium.org/125253
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@18618 0039d316-1c4b-4281-b951-d872f2087c98
Add gcl's first unit test.
Add version string.
Review URL: http://codereview.chromium.org/100095
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@14771 0039d316-1c4b-4281-b951-d872f2087c98