Blender Git Loki

Fix T71405: Trying to Ctrl-C on many buttons crashes Blender

Usually Ctrl+C copies the operator name to the clipboard
["bpy.ops.material.new()", "bpy.ops.object.material_slot_remove()"]
Crash happens for all buttons of UI_BTYPE_BUT without associated
operator [some are defined with callbacks only, often these are created
with e.g uiDefIconBut (instead of e.g. uiDefIconButO)]

Other examples that crash with Ctrl+C:
- animation decorators next to animatable properties
- button to show a modifier texture in the texture tab
- ...

2.79 survived here (result in the clipboard was just not changed hitting
Ctrl+C on these buttons), this is what happens with this patch as well.

Maniphest Tasks: T71405

Differential Revision: https://developer.blender.org/D6208

Merge branch 'blender-v2.81-release'

Fix T71199: Child-parent relationships arent kept after you make instances real.

Comparison function of the of the parent ghash was not fully correct,
could lead to some false positives in some cases...

Merge branch 'blender-v2.81-release'

Fix T71372: view layer is not maintained when area is duplicated into new window

Maniphest Tasks: T71372

Differential Revision: https://developer.blender.org/D6205

Merge branch 'blender-v2.81-release'

Fix T55632: USE_DRAG_MULTINUM and USE_ALLSELECT not working well together

'is_copy' was not set correctly on all uiButMultiState (it was done once
for uiHandleButtonData), resulting in 'delta' being used on some indices
of the array and not others in `ui_selectcontext_apply`.

Maniphest Tasks: T55632

Differential Revision: https://developer.blender.org/D6201

Cycles: Fixed OSL crashes from texture caching changes.

Merge branch 'master' into cycles_texture_cache

Mantaflow: Reset all cache pause frames fields when data bake is freed

Data Free was only resetting its own pause frame even though all bakes get deleted during this operation.

Merge branch 'master' into fluid-mantaflow

Merge branch 'blender-v2.81-release'

Fix T71194: UV Face centers wrong location with sub-surface mesh

GPencil: Fix poll for all select tools in Vertex Paint

GPencil: Reformat RNA code to extend selection in all modes

GPencil: Fix error in Circle select for Vertex Paint

GPencil: Attenuate colors when use mask in Vertex Paint

USD: Fix for `BASE_VISIBLE` being renamed

The rename was done in rB0812949bbc3d.

Merge remote-tracking branch 'origin/master' into sybren-usd

Merge branch 'blender-v2.81-release'