Blender Git Loki

Merge branch 'master' into blender2.8

Python API: restore bpy.app.autoexec_fail variables, some scripts use it.

Fix T57616: Deleting particle system instance object leads to crash

Explicitly tag copy-on-write form library remap. Previously, this
tag was used implicitly via geometry/transform tagging, which worked
ok for objects. For non-objects we do need to ensure all copies has
correct pointer and the only way to do so is to pass tag explicitly.

There is probably more places in the library remap where this is
needed, but not being familiar with the code makes it difficult to
spot where possible tags are missing.

Python API: bpy.app.handlers.depsgraph_update_pre/post

Reviewers: brecht

Differential Revision: https://developer.blender.org/D3978

Fix T57998: crash at start with jemalloc package on some Linux distributions.

The jemalloc library must be ahead of pthread in linking order, so jemalloc
can find the pthread symbols for its background thread.

UI: initialize drag-lock x/y axis from region type

When dragging in a vertical or horizontal region,
there is no need to detect the drag axis.

Gives minor usability improvement for dragging over vertical tabs.

Correct missing NULL check in recent changes

Fix uv lasso/box multi-object select logic

Was de-selecting all UV's on each iteration.

Tool System: uv lasso/box select options

These tools now support (new, add, subtract),
(xor, and) could be supported but are complicated by UV's sticky
selection modes.

Error in last commi

Fix wire-toggle restoring previous shading mode

Keymap: remove redundant keys from toolbar popup

Adjust the keymap so tools that don't exist wont use keys
from the default keymap.

Fix toolbar keymap accumulating items

Create a temporary keymap with items from the original.

Keymap: add Keymap.keymap_items.new_from_item

Needed to copy keymap items from other keymaps.

Cleanup: single quote enums

Cleanup: rename bone-select to xray

This shows bones in font and uses the xray toggle binding.
Also 'bone select' isn't very meaningful on it's own.

UI: Don't promt when deleting via Object Context Menu.

Suggested in the UI paper-cut thread at devtalk.blender.org by ThinkingPolygons

UI: Icons in context menu for copy/paste

Pose: make pose-bone xray usable in wpaint mode

Update UI, draw-manager and operator to support with pose-bone-xray
when in weight paint mode.

Keymap: remove 'Z' key to toggle bone-select

Alt-Z already does this.