Blender Git Loki

Fix new Text ID usercount handling in add/load cases.

Text datablocks should always have a 'single user' flag set, and they
usually do not have any user (since neither text editor itself, nor
Freestyle usage are text users - the second is odd btw...), the only one
am aware of is the script node (e.g. for OSL).

Add text case was simply not doing anything, so added.

Load text case was doing things in inversed logic (setting user count to
zero in BKE, then setting 'real user' flag in ED code). Made it the
other way around (BKE ID creation code should not care about usercount
usually, this is up to higher-level code to decide what to do
(operators, RNA...).

Note: tried to check all cases, but there might very well be some more
hidden bugs here...

Revert "Fix assert unlinking text"

This reverts commit b0b2546d4a3a308da19d218d919915aac4834e59.

Please do not sweept the dirt under the carpet like that! If there is a
bug, either report it or fix it, but do not silence it!

Cleanup messed-up comment formating from codestyle apply...

Pre-reserve memory to reduce reallocation

Fix T67191: Redo fails for 3D text operations

Cloth: initial steps for obstacle metric

USD: prevent crash when writing hair system with empty pathcache

Not sure what causes `psys->pathcache` to be `nullptr` in the first place,
but at least this prevents Blender from crashing.

LANPR: Use GPU_BATCH_DISCARD_SAFE marco.

LANPR: Remove useless GPU_ATTACHMENT_LEAVE flags.

Fix T63090: Delete keyframe reports invalid for multiple objects

LANPR: Renamed freestyle edge mark constant into lanpr.

LANPR: Edge/face mark UI now forllows LANPR checkbox.

LANPR: Remove freestyle #ifdef's.

LANPR: Rename freestyle edge mark functions to LANPR.

Cleanup: Replace if else if, by Switch

Outliner: Show menu when clicking on aggregated iconrow icons

This is still a work in progress. The code needs to be better
and the behavior could use some improvement. It works okay for
now though.

Outliner: Rename tree element flag

Renamed from MULTI to MERGED now that I see the real name in the
code

DRW: lattice vertices were too small

Fix T66492: Divide by zero with cursor to selected

CMake: Fix WITH_CODEC_SNDFILE detection

D5296 by @frispete