Blender Git Loki

Fix for O(N^2) runtime tagging in the new depsgraph.

Some of the tagging functions would be called for every operation, and then
in turn tag their ID nodes with all their operations again. With extensive rigs
we get ID nodes with a lot (10,000+) operation nodes, which leads to millions
of unnecessary tagging calls.

3D Text: avoid checking null character's text on path

Redundant and causes complications when improving text code.

Image view selected didn't account for region size

Now fit the selection with a 1.4x margin (matching 3d view).

Also move border fitting into own function.

BMesh: limited-dissolve, add check for wire edges

Recent degenerate check crashed on chains of wire edges

Minor code simplification in previous commit.

Fix compiler warning on OS X / clang.

Nodes: sort builtin compositor/shader/texture nodes alphabetically in menus

Reviewed By: lukastoenne, dingto, Severin, carter2422

Differential Revision: https://developer.blender.org/D1957

Fix artifacts w/ low near clear in bglPolygonOffset

Sequencer: skip text-effect rendering w/ no alpha

Sequencer text strip color options

D1930 by @NiKoZLaB

Fix alpha blending w/ font drawing & byte buffer

Fix mask active-point being lost on load/undo

Mask: always add a new spline when adding a new vert

Previously, adding a new vertex with Ctrl-LMB would move an existing
when there was an active spline but no active point.

This function is used as a fallback, extending an existing active point is already handled.

New mask points now compensate parent offset

Fix T48282: Newly added mask points don't follow parent

Cleanup: use const, duplicate header

Fix Cycles GLSL image texture node not respecting color space property.

Code cleanup: minor cleanups for GPU_link return values, normal map node.

Fix Font filebrowser not showing thumbnails when those are enabled by default in userpref.

Reported by Leon Cheung over IRC, thanks.

Fix T47992: Stereo 3D Anaglyph rendered Images saved too light