Blender Git Loki

Hrmm, this is a bit nasty: I am now using a different call to get a mesh
for export depending on whether the object containing the data has
modifiers or not. For an object without modifiers, things are nice since
the mesh can be properly instanced and reused. For an object with
modifiers there are problems, since a new Mesh has to be created,
akin to doing an Alt-C on the mesh, and we end up using more memory
after the use of the script than we used beforehand. (I wonder if
I would be better off porting the thing to C.)