[Bf-cycles] Enabling hair rendering on GPU?

[Tobias Oelgarte]

Hello,

i was using an older build with the first patches of the hair rendering 
feature together with my GPU. But currently it is only available for 
CPU, despite the fact that it was working just fine. Could we (re)enable 
the hair rendering again for the GPU inside the experimental feature 
set? I would really like to test it out, even if it would be unstable. 
It would also help to file bug reports to make it work, if it not 
already does.

Greetings from
Tobias Oelgarte