Try to use bzr rules to commit files with LF only in .cpp and .h files. Should change CRLF to LF in all bitmaps .cpp files.
In BITMAP_OPAQUE, use unsigned char instead of char for png member to remove warnings with some compilers.

Remove obsolete foldr resources/icons.
Updates svg icons in folder resources.

* Move various locate functions into the appropriate board item object.
* Unified best zoom for all frames derived from PCB_BASE_FRAME.
* Remove track.cpp as it is no longer needed.
* Dead code removal.
* Remove scary frame window pointer member from board item objects.
* Add draw bounding box to gerber draw item for debugging purposes.

* Added checks for Inkscape and pngcrush when MAINTAIN_PNG mode is enabled.
* Rebuild PNGs with transparent background.