Add short-range vertex-based pathfinder.
Integrate new pathfinder into unit motion code.
Change obstruction system to get rid of circles, and differentiate
structures from units.
Make PositionChanged messages synchronous.
Try to prevent some accidental float->int conversions.
This was SVN commit r7484.
Add RelaxNG schemas for all current components.
Add -dumpSchema command-line option to dump the combined entity schema.
Add a Perl script to validate entity templates against the schema.
See #413.
This was SVN commit r7452.