Generate LDCad parts bin custom list.

[Philippe Hurbain]

I used your tool to build this http://forums.ldraw.org/showthread.php?t...0#pid15670 - very handy!
Actually the only thing I struggled with was downloading xml from Bricklink...

I initially expected LDCad to decrease part count as they are used in the model, but I realize now that it is far from obvious to do when using submodels!