Blender Git Loki

UI: take zoom into account w/ curves widget

The Curves widget has buttons to zoom in on the curve. However the
click detection code doesn't take it into account, and at full zoom
in click on curve is detected very far from the actual visible curve.

Change it to compare the position to the actual line segments
in the UI coordinate space, i.e. with curve zoom applied.

Add wait cursor toggling dyntopo

UI: move dyntopo button to header

This looks a bit odd, but being able to see if dyntopo is enabled
when the panel is collapsed is handy.

Sculpt: skip normal calculation entering dyntopo

When no triangulation runs we can skip re-calculating normals.

BGE: Display Hardware infos only in standalone.

This patch moves the PrintHardwareInfo() function in standalone only, not in embedded. Why? Because you can need this infos for debugging
purpose in "compiled" blender files but it was boring to have it displayed each time you launched embedded. So you can have this infos when you
click standalone or when you run your executable app from a console.

Reviewers: moguri, kupoman, panzergame.

Enable dyntopo re-entering sculpt mode

BMesh: make toolflags optional

Saves 8 bytes per vert/edge/face.
Gives overall ~20-25% memory saving for dyntopo sculpting
and modifiers that use BMesh.

Fix T48757: Broken in D1120 normal baking

Fix T48728, part 2: Vertex colors not shown in texture mode

Transform Snap: Optimize edge-snap using BVH tree

changes in BLI_kdopbvh:

- `BLI_bvhtree_find_nearest_to_ray` now takes is_ray_normalized and scale argument.
- `BLI_bvhtree_find_nearest_to_ray_angle` has been added (use for perspective view).

changes in BLI_bvhutils:

- `bvhtree_from_editmesh_edges_ex` was added.

changes in math_geom:

- `dist_squared_ray_to_seg_v3` was added.

other changes:

- `do_ray_start_correction` is no longer necessary to snap to verts.
- the way in which the test of depth was done before is being simulated in callbacks.

CMake: list buildinfo.h as buildinfo.cmake's output

Keep the fake header to ensure we always run.

Correct fix for MSVC

Merge branch 'master' into blender2.8

Fix bplayer (c)

Merge branch 'master' into blender2.8

Cleanup: use const

Cleanup: spelling, indentation

Fix T48695: Slowdown w/ edit-mesh & shrinkwrap

0b5a0d84 caused regression since edit-mesh BVH wasn't cached,
each shrink-wrap modifier created its own BVH.

Correction to previous commit: Only skip colors for texture paint

This way we avoid regression of sculpt mode shading.

Hopefully now it's all fine.

Cleanup: endian tests