Blender Git Loki

Use int instead of bool

Causes issues when including in some files.

Logging: add argument --log-show-basename

Optionally strips leading path from filenames when logging.

Cleanup: --help text output

Some arguments missed their <value>.

Cleanup: blf internal struct naming

- use x/y/width/height/max as a suffix.
- replace 'num' prefix /w 'len' suffix.

Logging: add ability to exclude categories.

Docs: doxygen docs for clog

Fix clog: own error allocating from static buffer

Fix logger build w/ MSVC

Build deps: do sndfile patch also on linux platform

C Logging: use instead of printf for messages

- See `--log` help message for usage.
- Supports enabling categories.
- Color severity.
- Optionally logs to a file.
- Currently use to replace printf calls in wm module.

See D3120 for details.

Fix incorrect scene used for building freestyle stroke depsgraph.

Merge branch 'master' into blender2.8

Make ID icons safe for deletion from threads

Added a lock-free deferred queue for deletion. Now if ID icon
is requested to be freed from non-main thread, it will be added
to the deferred list. Actual deletion will happen later from main
thread.

Currently actual deletion only happens next time BKE_icon_id_delete()
is called, which might not be enough. But it's easy to enforce
deferred deletion.

Icons for preview images are not covered by deferred deletion yet.

Reviewers: mont29

Differential Revision: https://developer.blender.org/D3146

Added lock-free single linked list implementation

Only supports lock-free insertion for now, can not delete element
or traverse the list at the same time.

Merge remote-tracking branch 'origin' into blender2.8

Merge branch 'blender2.8' into greasepencil-object

Disable Feature Collada: Tests do not work on unix

The tests as they are now make string comparisons. This only works
on Windows because the reference files look different for different
operating systems because of different number formatting.
The collada tests need a complete rework (wip)

Fix object/bone select buffer big-endian sorting

Merge branch 'blender2.8' into blender2.8-workbench

Cleanup: unused function