* Remove sine and cosine look up tables from trigo.cpp and replace them with
sin() and cos() math functions.
* Large include file clean up to prevent header ordering dependency build
failures.
* Translate French code names and comments.
* Lots of coding style policy and doxygen comment fixes.
* Fix grid select box update bug on context menu.
* Fix via size and track width select box update bugs.
* Fix layer pair indicator button update bug.
* Fix auto track width tool bar control enable bug.
* Fix via size and track width select status bug in context menu.
* Fix layer select box and layer control widget select bug when current
layer is removed.
* Add virtual function to notify objects derived from EDA_DRAW_FRAME that
the units setting has changed.
* Coding policy class naming fixes.