Blender Git Loki

Render Branch: baking stability tweak, set G.rendering during bake to
disable drawing in 3d view, etc, same as for regular rendering.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29651:29653

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29614:29651

Render Branch: attempt to fix crashes with tile cache + baking.

Render baking bugfix (applies to renderbranch only)
lightgrouphash wasnt initialized

Render Branch (only) workaround for
[#22662] Transforming handles in the graph editor is broken.

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29614:29626

Render Branc: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29608:HEAD

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29587:29608

Render Branch: simplify option for shadow buffer size.

Render Branch: fix bug raytracing instanced objects with use instancing
disabled for the raytracer.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29546:29587

Render Branch: trying to fix windows compile.

Render Branch: remove some unused code from irradiance cache.

Render Branch: remove "inline" accidentally left in for testing,
and also remove and outdated comment.

Render Branch: another 10% performance tweak, store child pointers and
child bb just as fixed arrays of size 4 in nodes, nearly all nodes have
this many children, so overall it actually reduces memory usage a bit
and avoids a pointer indirection.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29540:29545, skipped particle_system.c

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29468:29540

Render Branch: fix crash with strands & override materials.

Render Branch: some optimization tweaks that need more testing on more
scenes, but seems to give a 15% performance improvement in tests here.

* leave out logf() factor in SAH, makes tree build quicker with no
noticeable influence on raytracing on performance?
* set max childs to 4, simplifies traversal code a bit, but also seems
to help slightly in general.