Blender Git Loki

correct ifdef'd accumulation normal ifdef

cleanup: use realloc for faces

cleanup: use 'const' metaelems

cleanup: minor edits to BVH code

cleanup: use realloc & store co/no as float(*)[3]

cleanup: use strict flags

cleanup: avoid passing by value when we can use const pointers

cleanup: style & doxy comments

Patch: T43678 BVH tree for Metaball calculation

T43678#291857 by @chrisr (mball_26_02_fix.diff)

use BKE_mball_tessellate.h include

also remove unused includes

BKE_mball: split tessellation into its own file

this has a lot of its own local structs, functions,
better to keep isolated from general metaball selection/library logic.