Fixed dangling pointer in ArnoldInterface.

It may be better to use smart point.
IES files and ASS files can be relative path. Changed Jules.

It's also okay to use absolute path. Now plugin directory and destination
for frames are still set as absolute path.
Merge branch 'master' into chenxi
Replaced spheres with mannequins in Jules scene.
Fast implementation of photo patch. Test data.
Merge branch 'chenxi' into working