Well, that was a PITA.
Luckily, this doesn't break guids to comments in rss feeds,
though it does change the links.
I haven't put in a warning about needing to rebuild to get
this fix. It's probably good enough for new comments to get the
fix, without a lot of mass rebuilding.
Put the icon after the name, mostly because it scans better on
non-graphical browsers where the alt text is displayed. And because the
name is really the more important part.
This is a mockup of Joey's idea; to do it properly, the icons should
move to the basewiki or to a comments underlay, and {x} should be
replaced with an OpenID logo (if one with clear licensing even exists).