Blender Git Loki

Converting a mesh object with modifiers to a temporary mesh during
export would cause a problem since the temporary meshes created
would often reuse the same name for many objects. This fix mangles
the object name and uses this for the temporary mesh name to avoid
this problem. (The naming is important, since vrml has 'DEF' and 'USE'
statements that are used like C macros, so if two meshes have the
same name the exporter will try to 'recycle' data to keep file sizes
low).