Comment 17 for bug 266554

I've sent Richard some comments off-line about this patch.

Meta comments: the 2.0.x patches can't be officially
supported, but I'm going to create an unofficial patches
page off the wiki for where the 2.0 patches can be migrated.

I think this patch set is too big for MM2.1, but if it's
cleaned up as per my private message, let's re-evaluate it
for MM2.2 (or 3.0).