Add a script to convert configurations to the joints_axes format.
The script brings back the [EMC]VERSION flag, and this particular iteration
is allocated the tag VERSION = 1.0.
Some limited thought has been given to future extensibility.
usage update_ini myconfig.ini
It shuffles the INI file sections to suit the new format, and also changes
the HAL pin names where necessary.

Signed-off-by: Andy Pugh <andy@bodgesoc.org>