Moster commit after sourceforge returns from the dead.

Moster commit after sourceforge returns from the dead.
 Make filters, shapefile, csv support configurable away at runtime.
 Fix several problems with new XML_UNICODE code.
 Allow expat library configuration at build time
 Allow more custom waypoint icons in Garmin, bring in more category support.
 Many fixes to track stat recalculator.

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@2040 f51c46e8-681c-474f-0cfe-069cfd0219fb