This is a long overdue blost post to say that gecko-dev and gecko-projects are fully live and cut over (and renamed, for those who have been looking at the now-defunct links in my previous blog posts).
Gecko-dev is on git.mozilla.org and on github; gecko-projects is on github only until it's clear that we won't need regular branch and repo resets. We have retired the following github repos, which we will probably remove after a period of time:
The mapfiles are still in http://people.mozilla.org/~asasaki/vcs2v
I've been working on a db-based mapper app, which, given a git or hg sha, would allow us to query for the corresponding sha. It also allows for downloading the full mapfile for a repo (gecko.git, gecko-dev, gecko-projects) or the combined full mapfile of two or more of those repos. It also allows for downloading the shas inserted since a particular datetime. Screenshots of my development instance are here.
Bear with me; I've got lots on my plate and not enough time. Mapper is in the works, however, and I think this should smooth over some of the rough edges when dealing with both hg and git. Additional eyeballs and/or patience would be appreciated!