I would like to add BMP subtitle support to dvdauthor.  This can be done with
ImageMagick or GraphicsMagick.  ImageMagick is a no go due to a huge dependency
chain, see bug 212478.  GraphicsMagick's dependency chain is smaller but not
quite acceptable yet.

However, I noticed that GraphicsMagick only depends on libwmflite, not libwmf,
and if it was possible to install only libwmflite, GraphicsMagick's dependency
chain would look much smaller and quite acceptable to me.

A patch that splits libwmflite into its own subpackage is attached.  I don't
know if/what font functionality libwmflite requires; if it needs it, I suppose
that possibly the urw-fonts dependency and /usr/bin/libwmf-fontmap and
/usr/share/libwmf dir should be moved to the libwmflite subpackage too.