solved a very subtle bug in polygon_test_point_inside.cpp. Sometimes a point outside a polygon was seen inside the polygon

Only for tests! not for production.

pcbnew: addded zones in non copper areas and starting work to use polygons in zone fill algos in not copper areas
work in progress: see changelog

Pcbnew: Add position edition in footprint dialog edition

removed GPC library due to its unacceptable license. Using the great and powerfull kbool library insteed

B.O.M. generation still have a minor problem wih this.

moved them to the files section of the kicad-devel yahoo group

* Change tabs to spaces.
* Make Boost required.

* Add polygon library.