[Bf-cycles] Network render status and design

[Brecht Van Lommel]

Hi all,

Recently some work on network rendering got merged.
http://developer.blender.org/rB85a0c5d4e1030a5fa95ad7450958a1b0fa033381

It's still rough and experimental, but works somewhat. For people who
want to work on this code, I wrote down some design things that have
come up talking to others, but that weren't written down anywhere yet:
http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/Network_Render

Brecht.