Blender Git Loki

UV Unwrapping SLIM: removing unnecessary ui parameters from minimize_stretch_operator

UV Unwrapping SLIM: renaming slim_c_interface to slim_capi and renaming contained functions

UV Unwrapping SLIM: renaming src to intern

UV Unwrapping SLIM: adding slim_matrix_transfer.h

UV Unwrapping SLIM: further refactoring according to discussion on D2530

UV Unwrapping SLIM: removing old minimize stretch operator

UV Unwrapping SLIM: respecting source/blender style conventions

UV Unwrapping SLIM: removing thesis marker-comments from code

UV Unwrapping SLIM: adding GPL header comment

UV Unwrapping SLIM: renaming another file

UV Unwrapping SLIM: renaming files and moving headers

UV Unwrapping SLIM: renaming intern/SLIM to intern/slim

UV Unwrapping SLIM: refactoring UVInitializer

UV Unwrapping SLIM: adding harmonic and mvc to uvinitializer

CMake: add missing headers

Cleanup: warnings

Fix T50932: depth picking w/ pose-bone constraints

Implement weight keys for pinning

Implement combined vertex weight by group influeces (Weight Keys)

Refactor: remove unnecessary re-initialization

Cloth was being re-initialized whenever pinning settings were changed.
This has been necessary in the past, as pins were only computed during
initialization, but ever since animated vertex weight support was added,
by having pins recalculate on every step, this re-initialization has
become unnecessary.