Blender Git Loki

Cleanup: CTX_DATA_BEGIN_FOR_ID no longer needed

Fix py API docgen script for new context members.

Make Static Override optional/hidden by default.

That feature will not be ready (or at least, not tested enough) to be
officially part of 2.80 beta. So we disable it by default, hidding it
behind a startup option (`--enable-static-override`), and a python
app var (`bpy.app.use_static_override`).

That way, people who really want to play with it can do it easily, while
not exposing/enabling non-production-ready feature by default.

Note that underlying override code remains active, i.e. files we do have
overridden data-blocks will be loaded correctly according to static override.

Eevee: LightProbes: Fix negative padding

Fix function using same local variable name as output variable

This may fix issues with certain compiler.

Dope Sheet: remove many hard-coded color and alpha constants.

Add the necessary colors and/or alpha components to the theme instead.
Also switch the background for ordinary channels to use the likely
intended theme option, instead of the window background color.

The general rule is that the channel color is drawn full strength in the
channel list on the left, and with alpha in the actual key frame area on
the right. This alpha is also reused with bone group colors.

Reviewers: brecht, billreynish

Differential Revision: https://developer.blender.org/D3813

UI: reorder and group blend modes in menus, similar to other apps.

Differential Revision: https://developer.blender.org/D3815

UI: move reports / job back to status bar, but make it more visible with color.

Merge remote-tracking branch 'origin/master' into blender2.8

build_depenencies: Fix url for openal.

Fix shadows of sun type lights on some Intel gpus

When you pass a struct as a parameter to a function, the qualifier "layout(column_major)" is lost.

Fix T57284: poor result UV unwrapping concave n-gon.

Multi-Objects: Implement/Fix POSE_OT_select_constraint_target

This operator had an initial multi-objects implementation.
However it would not select target bones across different selected objects.

Outliner: Open empty collection when something is dragged into it

Reviewers: brecht

Differential Revision: https://developer.blender.org/D3814

UV_OT_unwrap: Error messages

Make sure a message is not reported multiple times when working with
multi-objects. Like in 2.7x we may have two infos coming from the same operator.

In 2.7 we could report non-uniform xor non-scaled, and subsurface.
Now we can report each one of those errors separately.

Fix multiple-object uv selection not "deselecting" other objects

CTX_DATA_BEGIN for active object only (..._from_active_object)

For now only `selected_pose_bones_from_active_object`, more options can
be added on demand.

Discussed this with Campbell Barton. We may need this only for selected
pose bones, time will tell.

Versioning: name screens by their workspaces

Avoids all screens in the startup file being named 'Default.###'.

Image Space: make 'UV Edit' a separate mode

This is needed for splitting UV into its own editor, see: T54744

Outliner: only drag element under mouse if it was not selected before

Reviewers: brecht

Differential Revision: https://developer.blender.org/D3811