I've looked at a lot of the git repositories, but I'm not sure which one to start with (and they're fairly large, so I want to avoid scanning 25 gig of data). Where would I find the code to handle CVS and Subversion integration?
You can browse all of the git repositories at http://git.eclipse.org/c/ . The one you want is http://git.eclipse.org/c/platform/eclipse.platform.team.git/ (cloning URLs are shown at the bottom).