DXF and GCode- generator for involute gears

This is adopted version of cliffords gear generator. Some format statements were changed, to run also on old versions of python, also the visual display part was removed.
Make the file executeable, and it should run on the slightly outdated ubuntu hardy, that is necessary to run the free cnc-controller software emc2.
geargen_hardy is just this version

however, gearsgcode.py is an advanced script, that will also create a ngc gcode file.
it is parameterized.
It has cutter compensation enabl