Support multiple, non-overlapping maps. Maps can be placed in any subdirectory of ../maps/earth/monav/ now and will be recognized automatically if they contain the plugins.ini required by monavd.

Optionally (recommended) a $dirname/$dirname.poly file in osmosis polygon filter file format (in the tiling scheme from cloudmade; might switch to kml instead) can be provided to determine if the map is applicable for a route request (i.e. all via points in the route request are inside the map polygon).

The .poly files can be downloaded directly from cloudmade (CC-BY-SA, distributed with the country osm.bz2 files).
They correspond to simplified country borders.