[Bf-committers] Problems with premultiplied alpha channel in 8 bit images

[gespertino at gmail.com]

I forgot to link the blend file where I tried to reproduce the bug
inside the compositor by gamma-correcting alpha channel.

http://ubuntuone.com/p/ROq/
This forces the bright halo artifact inside compositor and the
resulting appearance is the same you get when you compose the
premulled PNGs from blender in other application (or Blender's VSE)