FreeCAD from Jessie backport

[Luca Bezzi]

Hi all,
I just downloaded and tested FreeCAD package from Jessie bacports. It 
works fine in ArcheOS Theodoric. I think we could add it in our repos 
and close archeos-cad metapackage (with LibreCAD for 2D and FreeCAD for 
3D). IMHO a good 3D CAD is now useful to develop/modify small part of 
hardware device to be printed; this is useful to build/modify hardware 
both for the excavation and for the lab.

Ciao.