Add --vcs option to upload.py (fixes issue137, reported and patch by sgk@chromium.org, with slight modifications).
Add --vcs option to upload.py (fixes issue137, reported and patch by sgk@chromium.org, with slight modifications).

git-svn-id: 095a516e186c72f46b708383d0d3f28c2432e8a1@468 e30e9e8f-1b4c-0410-881d-6f13584adfe0

imirkin/rietveld,imirkin/rietveld