Patch tracking

The next big thing for the Toolchain WG is sending patches upstream and beginning to track patches in general. Some of the use cases are:

* Do a change upstream in 4.7, backport it to our 4.5, and backport it to our 4.6 when we make one * Do a change locally, track where it lands upstream, and figure out what we have to bring forward when we next rebase * Track what is Linaro specific and can't go upstream so we know what to bring forward

I'm currently planning to use the Launchpad bug tracker and some custom reports to manage this. It's important that we don't lose any patches.

Does anyone else have similar requirements, use for such a tool, or know of tools that already cover this?

-- Michael