Fixing metaball boundbox creation on render.

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r32752:32753

change from r31533 (Ton hasn't got the render branch)

Missed file in last commit.

Render Branch: quick durian hack for final tweaks, hair particle system can now
copy coordinates from a mesh object (set Source object in Render panel).

The mesh object can be created by using Convert on the particle system modifier,
after which any mesh modifiers can be applied to it. Ensure that the render path
steps is the same as display path steps, otherwise this doesn't work.

Render Branch: code tweak, revert splitting up of ShadeInput, didn't work out
well and ended up mostly being confusing.

Render Branch: code tweak to Render struct.

Fix for #23006: approximate AO/env/indirect used averaged subpixel location
which could give light leaks, this uses same trick as raytracing to fix it.

Render Branch: remove centmask/centLut lookup optimization for finding
subpixel position from a mask. It's not working correct for OSA != 16,
and can result in light leaks with raytracing in that case.

Render Branch: paths tweak, don't look in local directory for USER scripts.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30470:30620

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30448:30470

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30435:30448

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30429:30435

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30407:r30429

Render Branch: quick fix for path problems, using local scripts as
system rather than user scripts, will discuss doing the same in trunk
later.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30308:30407

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30292:30308

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30286:30292

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r30274:30286