Blender Git Loki

Draw Manager: Fix lazy compilation on certain hardware.

Before, the drawing functions sometimes froze with `AMD Radeon HD 7570M`.

Merge branch 'master' into blender2.8

Depsgraph: Build relations for objects linked via pchan constraints

This is similar to previous fix for missing ID nodes, just the original
fix missed this part of change because it looked like it is already
happening.

BLF: Fix broken shadows on certain hardware.

This was due to uninitialized texture space.

Fix T54423: Messages from RNA_property_editable_info() were not translatable.

Depsgraph: Flush debug prints

Makes it more reliable to see what was updating last when
crash happens.

Fix crash when no object is active

Could happen when deleting the active object or opening an old file

Fix crash in graph editor id remapping

Dopsheet pointer isn't set...?

Fix invalid context when refreshing popups

Patch D2759 by @raa, with minor edits by me.

UI: Fix widget shader on certain compiler.

There was a crash with Intel(R) HD Graphics 4000.

Cleanup: unused variable

UI: Clamp scrollbar offset to lower view boundaries

Fixes the "emtpy scrolling" glitch by clamping the scroller offset to
the boundary of the view when it's smaller than the previous.

Fixes T45197. Patch by @januz.

Differential Revision: D1580

GPU Shader: Cleanup: Remove unnecessary ";"

UI: Fix widget shader on certain compiler.

There was a crash with `Intel(R) HD Graphics 4000`.
Thanks to @fclem for the help and review.

Use the newer version of the bullet 6dof spring constraint for rigidbody.

The new constraint is slower and not backward compatible, but should
be better, especially in the damping side. The new constraint also
has a different valid range of the damping coefficient, and a limit
implementation that bounces instead of making the object stationary.

Reviewers: sergof

Differential Revision: https://developer.blender.org/D3125

Merge branch 'master' into blender2.8

Added support for the WEBM/VP9 video codec

WEBM is the codec name, and VP9 is the encoder (the older encoder "VP8"
is less efficient than VP9).

WEBM/VP9 and h.264 both have options to control the file size versus
compression time (e.g. fast but big, or slow and small, for the same
output quality). Since WEBM/VP9 only has three choices, I've chosen to
map those to 3 of the 9 possible choices of h.264:

- BEST ? SLOWER
- GOOD ? MEDIUM
- REALTIME ? SUPERFAST

The VERYSLOW and ULTRAFAST options give very little extra benefit.

Reviewed by: @Severin

Remove commented-out code

Fix build error with GCC, make depsgraph iterator compatible with C++.

Build: fix make deps using system webp/sndio libs.