Blender Git Loki

Fix: texture scaling for sculpting is different between overlay and
stroke. The reason is that we use a different sampling function.
Reported by Michalis Zissiou, thanks!

Cycles: when render layers have per layer number of samples set, the Sampling
panel now has an option to specify how to use them. There's three options:

* Use: render layer samples override scene samples
* Bounded: bound render layer samples by scene samples
* Ignore: ignore render layer sample settings

Fix some names, and move overlay flag to overlay_flags.

add missing call to flush selection on selecting manifold geometry.

fix for BKE_bmbvh_ray_cast() returning one of the vertices normals rather then the face normal. also remove redundant NULL checks.

add distance arg to BKE_bmbvh_ray_cast(). currently unused.

Option to hide overlay during a stroke. To enable, press the brush icon
next to the overlay alpha.

bmesh speedup for bvh building, replace SmallHash with BLI_bitmap, using a hash doesn't make much sense since in most cases all vertices are accessed and the hash isn't guaranteed to be small.
gives ~9x speedup to filling 'cagecos' in my own tests on a high poly mesh.

Fix crash when no brush is active. Reported by Francesco Siddi, on irc
thanks!

Fix #34966: cycles packed PNG images were showing alpha fringe, packed images
were not properly premultiplied.

skip calling BKE_editmesh_tessface_calc() from BKE_bmbvh_new(), also quiet float/double warnings.

Fixed compilation error with gcc 4.4 and 4.5

Was giving structure re-declaration error,
made it one typedef and struct declaration only.

Fix #34897: Select edge loop shortcut not working in Maya preset

Made it so loop/ring selection are assigned to RELEASE button,
so they're not conflicting with regular selection.

There's still seems to be a conflict between loop and ring
selection, but it was here for ages and that's another story.

use psys->seed for smoke random number generator, increase size of MATHUTILS_TOT_CB and reduce float->double conversions.

Fix for line instability with the Polygonization geometry modifier.
Extra long straight lines showed up randomly due to the use of an uninitialized
variable as a line length parameter.

code cleanup: use BKE naming conventions for functions in BKE_editmesh.h and BKE_editmesh_bvh.h

move editmesh functions out editderivedmesh.c into editmesh.c

move editmesh_bvh.c into blenkernel.

update uncrustify config, use floats for FloatProperty() min/max

Compile fixes for recent commits