Blender Git Loki

Fix neighbor conflict checks for Poisson disk distribution.

The cell size is chosen as r/sqrt(3) (i.e. max. 1 sample per cell),
which means that the influence of each cell extends beyond the 1st
neighbor. a 5x5x5 box (except the center and corners) needs to be
examined to find collisions.

Added a 1-cell margin to the grid dimensions to simplify neighbor lookups.

Separate step for mesh sample generators to bind them to a specific mesh.

Merge branch 'master' of git.blender.org:blender into soc-2017-package_manager

Move package manager code out of addon

Code from addon repository: https://developer.blender.org/diffusion/BPMA/

Merge branch 'blender2.8' into greasepencil-object

added guiding parameters to UI

alpha and beta parameters are used to control lag and size of fluid guiding

Possibly fixed a big portion of the ring missalignments and uncomplete rings.

Fixed some normal orientation issues. B-Ring normals are now aligned A-ring still needs normal alignment.

Initial implementation of Poisson disk sampling on meshes.

This is still buggy (uneven sample coverage) and needs changes to the
sampling system for better threading support.

The implementation is based on

Bowers, John, et al. "Parallel Poisson disk sampling with spectrum analysis on surfaces." ACM Transactions on Graphics (TOG). Vol. 29. No. 6. ACM, 2010.

Fix Lock icons

This icons were removed by error in an old merge commit

Moar WIP work towards editing Amber repo.

Adding skeleton for adding Amber repos, adding new assets... Not
finished yet, by far.

Change maximum range for pixel size

Remove previous commit

This is not required because the widget manage the transformation

Fix problem with axis in Local transformations

Mayor rework of the edgering system. Unified code, bugfixes.
A lot of bugs still remain.

Merge branch 'blender2.8' into greasepencil-object

Rotate manipulator for Grease Pencil

Before only global orientation was supported

Merge branch 'blender2.8' into greasepencil-object

fix for initial rotation in convert to object and convert to keyframes