CAM: Improved Fanuc support (header, python warnings).
CAM: Updated Fanuc test and support methods to match working post script.
CAM: Implemented Fanuc thread tapping and fixed crash in post processor.
Adjusted fanuc post processor to always use required drill parameters.
CAM: Added M8x1.25 (aka M8 coarse) thread tapping bit.
CAM: Ensure pre-/postamble help text matches active values by avoiding duplication
CAM: Made Fanuc post processor compatible with FreeCAD 1.1.
CAM: Adjusted Fanuc post processor to move Z to tool change position before M6