Current issues:
- NURBS - needs API additions
- "all scenes" export - cannot switch scene in bpy
- normal calculation, disabled
- duplis - need testing, only dupliverts tested
- matrix problem
- UI, 18 options currently don't fit into filesel panel, will do manual lay out once it's available
- probably others...
BPY:
- made operator "execute" method required to avoid crash
- added bpy.sys module which replicates old "sys" module
API:
- replaced create_*_mesh with a single create_mesh accepting type parameter
- added Mesh.create_copy to create a copy of a mesh with 0 users
Ran `dos2unix` on source/blender/python/SConscript
Note's
* exports the mesh without modifiers or transformations applied
* supports UV's vertex colors
* no support for normals yet (missing from data api)
* registers an operator called EXPORT_OT_ply
* no file selector yet. can only fun from python currently
bpy.ops.EXPORT_OT_ply(filename="/tmp/test.ply")
* removed double lookups on the vertex dict, build face verts to write allong the way.
