Blender Git Loki

Writefile: move file flags to BlendFileWriteParams

This removes G_FILE_HISTORY, G_FILE_SAVE_COPY & G_FILE_USERPREFS.

Using file-flags made logic harder to follow since it's not so clear
which flags are expected to be in G.fileflags & which are meant to be
set and passed as arguments, these are shared between read & write
functions too.

Add BlendFileWriteParams so options which don't need to be stored
aren't mixed up with flags that are stored for reuse.

Cleanup: SPACE_ACTION does not have a RGB_TYPE_TOOL_HEADER

So no need to check this specific case.

Cleanup: use bool and enums in `match_region_with_redraws`

Function used int for everything.

Fix app-templates not resetting the user interface

Regression in 45b5f4e3dff75

Merge branch 'master' into soc-2020-outliner

Outliner: Show pose group icons

Pose groups previously showed a dot icon. Now it draws the correct icon.

Outliner: Add properties sync for most types

Add properties sync for all types that have a context tab. Some may have
been missed but they can be added later easily.

Cleanup: use doxy sections

Remove proof-of-concept properties sync

Cleanup commented separator.

Cleanup: unsupported ATTR_FALLTHROUGH use, clang-format

Property Search: New method that reuses existing layouts

This method just transforms each layout into a row or a column, without
adding any new layouts at all. There are a few problems with this method
though, the columns have a fixed width for some reason, and it becomes
more difficult to add the label column.

Deflection fixes and cleanup

Cleanup: Move snap callbacks to their respective transform mode

These functions are very specific to the mode.

More modes can support snap, and there is no reason to keep all
callbacks for each mode in the transform_snap.c file.

Merge branch 'master' into greasepencil-edit-curve

Fix T78004: Instant crash when Shift+D duplicating a Collection Instance.

Dummy mistake in own recent refactor of duplicate code...

Merge branch 'master' into greasepencil-object

Update velocity calculation to be better and move the normal constraint check

UI: Weight Modifiers Falloff: Use better step icon

LibOverride: only tag actually changed orig IDs for automatic override diffing.

This makes any operation (including mere bone selection) several times
faster on some complex production character, since we typically now only
need to diff a single ID, instead of tens of them.