Original commit message from CVS:
Mega patch updates almost all the plugins to GObject. This was done with
a Perl script, with only a few minor manual tweaks where the perl didn't
catch the code just right. There may be a few minor issues remaining from
this, but they should be easy to catch (plugin doesn't work).
There are several plugins that have GDK/GTK code in them that shouldn't,
these need to be dealt with next.