Blender Git Loki

Fix region action zone not working when hidden

Introduced in recent fix for T61554

Docs: expand action-zone type comments

Fix shift-click to select multiple reports

D4751 by @Poulpator

GTest: BLI_path_util tests

Unit tests for:

- BLI_path_extension_check
- BLI_path_frame_check_chars
- BLI_path_frame_range
- BLI_path_frame_get

D4749 by @zazizizou

Fix crash on mesh filters

Cleanup: use 'use_' prefix for RNA booleans

VSE: Cache rewrite

This patch implements new cache system.
Aim is to give user more control over cache, so it can be maximally
utilized. This is done through sequencer timeline side panel
in category proxy & cache.
Cached images are also visualized in timeline, controled by
sequencer timeline view->cache menu

Functional changes:
- NOT use IMB_moviecache API
- refactor names of cached image types
- each scene owns 1 sequencer cache
- merge preprocess cache into per-sequencer cache
- cache links images rendered per frame in order as they are created
- add cache content visualization tool
- add RNA properties to control the cache

More info can be found in design notes in blenkernel/intern/seqcache.c
and in https://developer.blender.org/D4443

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D4443

splitup forwarding function

GPencil: Cleanup - Rename annotation drawing function names

Actually, the static functions had the same name used for grease pencil.

Now, the annotation functions have a different prefix.

extract method that ensure all inputs

extract method that ensures required inputs

deduplicate stack setup code

deduplicate some code

better type names

destruct unused values as early as possible

Fix crash on remesh operator with a multi user mesh data.

I also added some error messages.

deduplicate code to setup tuples

deduplicate some code

simplify stack info setup

initial support for lazy inputs in new fgraph evaluation