Disclaimer: I haven't tried that yet, I'm just guessing that
one can reference a specific revision via URL.
i don't know whether that's possible either: perhaps i'll give it a go
to see whether it works
It won't work. viewcvs can point to revisions, but svn cannot:
http://svnbook.red-bean.com/en/1.4/svn.serverconfig.httpd.html#svn.serverconfig.httpd.extra.browsing
Looks like you'll have to go for a branch after all.
On the other hand, deleting a branch and making a
new copy from trunk is not that much effort either.
cheers,
Roland