Update gtk-osx-integration to version 2 of the API

In order to be able to work with Gtk3 introspection all the APIs had to be
renamed. Instead of quartz_application... and gtk_osxapplication... all the API
functions are now name gtkosx_application...

This will break the build for people who haven't upgraded to the latest - but
supporting both would be unspeakably ugly.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Hack Makefile, gtk-gui.c and divelist.c to allow building w/o osm-gps-map

While we are waiting for an autotools generated Makefile, this should allow
people to build that don't have osm-gps-map.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>