Paul, I think this bug is yours?
http://bugzilla.gnome.org/show_bug.cgi?id=554511 If so, can you attach your work there? As per the link Gabe referred to above, you can use the `svn diff` command to produce a patch, though I think you'll need to use the `diff -u /dev/null` method to refer to your new import source file. If it's easier, let me know and I can probably produce a working patch and upload it to the bug.
Don't mean to be a nitpick, just want to make sure this doesn't get lost. Looks awesome! (I had referred a friend to the import fanciness a while back only to find out that it was no longer present.)