Apply some important fixes to the GNOME upgrade script that I really
really really should have applied earlier.
- On a restart, continue where we left off, instead of removing
all applications and starting over again. The end result will be the same either way, but if you're not using ccache(1), the build time can be really frustrating.
- When the script runs pkgdb(1), pkgdb complains about the
nautilus-media port having been removed. Add a message to inform users not to worry about it, and to just hit Enter to ignore the error.
- GNOME_UPGRADE_SH_VER bump.