Blender Git Loki

Render Branch: minor code tweaks and warnings fixes in implicit solver, should
have no effect, committing these separately from the actual changes.

BLI_init_threads/BLI_end_threads with NULL listbase now raises thread level
and enables mutex protection on MEM_* functions, useful when you want to call
these functions from an OpenMP thread.

Render Branch: two utility functions:

BLI_linklist_find: find link at an index
BLI_linklist_insert_after: insert link after another one

particle system can start in negative frames now. also removed BIF_preview_changed, since it's not being used anymore.

Fix for the eyelid rig type. Vector(#, #, #) to Vector((#, #, #))

made trail settings a seperate panel. bug fixes will follow, after I work on some more urgent ones first.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r28759:28801 ...note: skipping changes from properties_particle.py, will need to be merged manually

Render Branch: disable threading for vector dot product in implicit solver
for now, due to non-commutative nature of floating point ops the sim would
give different results each time! Sometimes subtle, but sometimes also very
different.

version patch for 2.49 boids; be warned: this is not really at all correct, but hey at least no more crashing :)

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r28726:28759

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r28663:28753

workaound for smoke pointcache not being read, this may not be a correct fix so committing to render-branch for now.

fix for mistake in commit 28570

Render Branch: Fix problem rendering lamp halo's with some materials
using lightgroups.

Render Branch: Fix wrong (non-normalized) orco coordinates for particle
system with subdivision surfaces disabled, resulted in strange dark spots
when test rendering sintel at subdiv level 0 due to different textures
coordinates.

Render Branch: tweak malloc names to debug memory usage.

Three optimizations for hair sim effectors:

* Multithread calculating effector forces on vertices.
* Avoid unnecessary where_is_object_time call.
* Avoid perlin noise macro that might expand into slow code.

If only we were actually using effectors more, then this might have
been a significant optimization :).

allow negative start frames for point caches

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r28713:28726

ui tweak