Blender Git Commit Log

Possibly related to bug #1851:
orco coordinates were assumed to be valid when pointers were non-null,
this seems to have been a wrong assumption, pointers were probably unitialized
(but only for some objects like surfaces?), so when the export code tried to
access them, it crashed.
Now the rendermaterial texco flag is tested instead, which probably is how
it should have been done in the first place...