Blender Git Loki

Fix errors in UI scripts after last merge

Patch by @sergey, with minor fixes.

Merge branch 'id_override_static' into asset-engine

Fix draw on parented object

When the gp object was parented, the location was not using obmatrix and the position was wrong.

Cleanup: Add end line

Reorganize shgroups creation

Improve the creation of shading groups and fix some memory leaks when the shading group was created but not used in any pass.

Merge branch 'master' into blender2.8

Correct last commit, use WM_exit

Without this temp directory isn't removed.

Merge branch 'blender2.8' into greasepencil-object

Exit with invalid command line arguments

Loading blender with an unknown name would interpret it as a blend file.

This meant passing `--arg` arguments would end up creating new
blend files which could be confusing if you made a typo on a command
line argument.

Now check the string has a blend file extension,
exiting if it doesn't.

Minor RNA tweaks for MultiEdit

* Rename RNA properties to bring them more in line with standard naming
* Make it clearer in the tooltip for MultiEdit that only selected keyframes
will be edited

Merge branch 'master' into id_override_static

Merge branch 'master' into blender2.8

Depsgraph: Use new ID copy API to copy scenes

Avoids temporary main and datablock memory from being allocated.

Allow non-initialized memory to be passed to BKE_id_copy_ex

This only applies when LIB_ID_CREATE_NO_ALLOCATE flag is used and guarantees
that non-memset-zero memory can be used (or, that same memory chunk might be
used over and over again without need to clean it from the calleer).

Fix operators adding manipulators multiple times

Running spin or bisect twice in a row added widget groups each time.

Add note about handling of root nodetree in ID copydata.

OUr beloved root nodetrees... Had to check again the code to undersand
why we copy them with bmain even though they are not in bmain, so this
is worth a comment. ;)

Cycles: Add extra logging in CUDA device detection code

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
release/scripts/startup/bl_ui/space_view3d.py

Merge branch 'master' into blender2.8

Merge branch 'master' into blender2.8