Created osm.h, re-factoring, unit test script bug fix

Created osm.h, re-factoring, unit test script bug fix

 - Created osm.h for OpenStreetMaps related constants and re-factored
   mapcommon.h

 - re-factored GeoCoordinate::convertFrom()

 - removed mapcommon.h dependency from GeoCoordinate and SceneCoordinate

 - bug fix for run_unit_tests.sh: finding and parsing the unit test
   project files was cutting "pro" also from the middle of the path
   and not just from the end as intented