Blender Git Loki

Merge branch 'blender2.8' into workspaces

SLIM: reuse LSCM logic for pinning, to fix issue with multiple charts.

SLIM: move most SLIM integration behind param_* API, reuse more code.

SLIM: transfer weights in construction, fix subsurf case.

SLIM: use operator history instead of toolsettings for remembering settings.

SLIM: move code around, no functional changes.

SLIM: match code style.

added guard for smoke/liquid sampling/distance functions

in smoke domains no need to get mesh distances, in liquid domains no need to calculate smoke influence factor

Automatic DPI for all platforms, per monitor DPI for Windows.

For Windows 8.1 and X11 (Linux, BSD) now use the DPI specified by the operating
system, which previously only worked on macOS. For Windows this is handled per
monitor, for X11 this is based on Xft.dpi or xrandr --dpi. This should result
in appropriate font and button sizes by default in most cases.

The UI has been simplified to a single UI Scale factor relative to the automatic
DPI, instead of two DPI and Virtual Pixel Size settings. There is forward and
backwards compatibility for existing user preferences.

Reviewed By: brecht, LazyDodo

Differential Revision: https://developer.blender.org/D2539

Merge branch 'blender2.8' into gpencil_2.8

Remove support for py app-templates

Only zip-files make sense here.

Merge branch 'master' into blender2.8

Quiet warnings

Merge branch 'master' into blender2.8

Cycles Denoising: Use correct alignment of denoising buffer offsets for OpenCL

Cycles Denoising: Fix variance calculation for cross denoising and split kernel

Cleanup: imports, indentation, long lines

Merge branch 'master' into app-templates

All important changes are now in master, this just syncs the branch.

Fix unreported: inaccuracy of interpolation of custom color layers due to float truncation

Same solution from rBd23459f51640 but now in `layerInterp_mcol`
Also a cleaning was done in the includes

WM: Application Templates

This adds the ability to switch between different application-configurations
without interfering with Blender's normal operation.

This commit doesn't include any templates,
so its mostly to allow collaboration for the Blender 101 project
and other custom configurations.

Application templates can be installed & selected from the file menu.

Other details:

- The `bl_app_template_utils` module handles template activation
(similar to `addon_utils`).
- The `bl_app_override` module is a general module
to assist scripts overriding parts of Blender in reversible way.

See docs:
https://docs.blender.org/manual/en/dev/advanced/app_templates.html

See patch: D2565