- Add a <githash> tag which accepts a Git hash. Leave <revnumber> as is for svn revisions. In theory we could add a new attribute to <revnumber> to say which VCS to use, but this would require tagging either all SVN revisions or all Git hashes explicitly which would be invasive. A new tag going forward seems simpler.
- Revert svnweb.link back to generating svnweb links. This fixes all the explicit <revnumber>'s referring to SVN src commits in existing documentation.
- Add a cgit.link which links to a Git commit in cgit. githash generates cgit.link's when asked to generate a href.