Alphabetize gm options (in usage message and option parser). Also add long-form option names for all options. Review URL: https://codereview.appspot.com/6817050
Alphabetize gm options (in usage message and option parser).
Also add long-form option names for all options.
Review URL: https://codereview.appspot.com/6817050

csulmone/skia,csulmone/skia,csulmone/skia,csulmone/skia