Blender Git Loki

Buildbot: another workaround for the Windows command length limit, this time
with the freestyle module which has 242 cpp files.

Attempt to workaround mingw64 buildbot issue with Windows command length limits,
by splitting the compositor module into 3 parts. The operating system limit is
32767, which gives less than 120 characters per file with 272 cpp files.

Fix OpenGL render not working correct with display color space set to None
(color management off).

Fix for invalid zero-length orientation vectors.
Problem report by flokkievids in the BA Freestyle thread, thanks!

Also made changes to suppress warnings in strip creation when Freestyle debugging is disabled.

Fix particle hair display percentage not properly getting restored after
rendering. This used to happen in an unneeded frame change update which was
removed. For heavy particle systems this could have a bad impact on viewport
performance after rendering.

Fix #35767: transforming nodes in the node editor changed the wireframe color
of the active object in the 3D view. This was due to sharing a global G.moving
flag to indicate that transform is active, now it's only set per transform data
type so different editors don't influence each other.

Fix unnecessary 3D viewport redraws in various cases, in particular when editing
node materials.

Area and region listener callbacks now get the screen and area pointers passed, so
they can do more fine grained checks to see if redraw is really needed, for example
depending on the 3D view drawtype.

Fix unnecessary redraw of 3D views when making changes in compositing nodes.

Render stats text: show elapsed time for blender internal, hide useless "Single Layer"
at the start, more clearly indicate what the render time of the last frame was, some
other tweaks for consistency.

Making sure free_nodesystem only frees non-NULL data. This helps address some problems in the BGE with loading multiple blendfiles.

remove own optimization in scanfill, in rare cases it caused problems, reported as [#35861]

calculate polygon normals for BKE_mesh_recalc_tessellation() inline rather then using scanfills function.

fix [#35457] Mirror the U texture coordinate does not work in projection painting
regression since 2.61

fix for editing lattice interpolation and options in editmode had no effect (exiting editmode would loose changes too).

remove unused c file

fix [#35844] "Blender User Preferences" window don't save size font

Fix GLSL not showing shading properly on the backside of faces. Now it flips
the normal towards the viewer, seems to give consistent results with blender
internal, cycles, normal maps, etc.

Started from patch #32761 by Vitor Balbio, but changed it to do normal flipping
earlier so it solves all cases.

lattice: use functions rather then defines, also added a function to get uvw from an index.
- BKE_lattice_index_from_uvw()
- BKE_lattice_index_to_uvw()

Added missing include to collada sources

removed obsolete forward declaration