I couldn't figure out how the current packaging infrastructure was supposed to
work, but with not too much work I could get the more standard gtk-mac-bundler
to do what I wanted, so I added the support files needed for that and a little
README on how to use them.
The subsurface.sh and subsurface.bundle files are based on the launcher.sh
and gtk-demo.bundle files from the gtk-mac-bundler release which is under GPLv2.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
