Updates progress steps for random maps.
Latium is not circular, so explicitly set that.
Fixes some weirdness with Atlas random map generation.
This was SVN commit r9470.
Includes default library "rmgen" w/ API based on rmgen tool.
Modifies rmgen scripts Cantabrian Highlands, Neareastern Badlands, and
Latium.
Old map support dropped from MapReader.
Fixes a few bugs in existing game setup and initialization scripts.
This was SVN commit r9096.