Scaling the matrix

[Roland Melkert]

BIG WARNING: When you insert a new part in LDCad, it inherits the orientation of last previously selected part... but also its scaling! This can be very misleading (I was caught by this one while preparing this tutorial!)

I never intended it to work with scaling, so basically all editing code assumes it's non scaled.

That said, as scaling is just an 'rotation extension' it should work in most places