ideally this would only happen in cases where there are more then 1 image so we could avoid ugly names in common cases.
svn merge -r31916:31915 release/scripts/op/io_scene_obj/export_obj.py
- made operator dir's into python packages
- lazy loading of module which do the actual import and export (faster blender load times)
- general maintanance and small fixes.
- bugfix for exporting x3d materials
- leak fix for exporting 3ds