Support modestmaps versions >= 2.0.0.
Support modestmaps versions >= 2.0.0.

Patch by Andrew Harvey <andrew.harvey4@gmail.com>

jbants/TileStache,Billups/TileStache,TileStache/TileStache,Billups/TileStache,Billups/TileStache,jbants/TileStache,TileStache/TileStache,jbants/TileStache,TileStache/TileStache