up to fresh snapshot (
20131210, git
aeab41a)
old one did not recognize --platform argument to download_from_google_storage tool
new, version
20101127 snapshot
based on openmamba src.rpm package
http://www.openmamba.org/pub/openmamba/devel/SRPMS.base/depot_tools-svn20101127-1mamba.src.rpm