Blender Git Loki

Modifiers: port shapekey modifier, some cleanup.

Modifiers: port UV_unwarp from DM to Mesh.

Pretty trivial...

Add depth and orientation options to 3D cursor tool

Cleanup: unused value

Modifiers: Remove remaining parts of md->scene

Modifiers: Remove lots of usages of md->scene

Subsurf: Move away from using scene from modifier data

Cloth: Move away from scene stored in cloth modifier data

Multires: Move away from using scene from modifier data

StudioLight: Better API

In stead of a single refresh function that re-init the whole system. The
API now supports adding and removing. Which will be much faster and less
flickering of missing icons when adding/removing lights

Merge branch 'master' into blender2.8

CMake: Make language explicit for per-file strict flags removal

CMake: Cleanup, add_cc_flag -> add_c_flag

CMake: Cleanup, rename CC_REMOVE_STRICT_FLAGS to C_REMOVE_STRICT_FLAGS

CMake: Tweaks to removal of strict flags

Silences the following strict flags from external libraries:

- -Wclass-memaccess
- -Wswitch
- -Wtype-limits
- -Wint-in-bool-context

Needed to tweak macro a bit, since the old logic was wrong:
we can not use CXX flags for C compiler, need way more strict
separation between what goes where.

Cleanup: move cursor rotation into own function

Outliner: Aggregate ID types and object types together with numbers

We draw small numbers over the icon of multiple objects of the same type.
Also, we make all inlined elements to be non-clickabled.

For modifiers we still do it the old way. In this case it is more important
to see the order then the ammount.

Reviewers: brecht, campbellbarton
Subscribers: billreynish, venomgfx

Design task and mockup: T54707
Differential Revision: https://developer.blender.org/D3497

Update theme Flatty Dark Blueberry

Merge branch 'master' into blender2.8

Cleanup: rename 3D cursor calculation vars