Blender Git Loki

Edit Mesh: multi-object support for 'Fill Holes'

Tool System: use release_confirm for extrude

Tool System: inset tool now completes on release

Fix quad view region dividing lines not drawing after recent changes.

UI: respect separators for row layout

UI: use the layouts scale_x to scale icon width

UI: Set cursor to X_MOV when editing number button middle area

Reviewers: campbellbarton, brecht

Differential Revision: https://developer.blender.org/D3184

Merge branch 'blender2.8' into blender2.8-workbench

WIP: Fix more operators for copy

Still a memory segment fault when copy several strokes.

UI: use new extrude icon and correct keymap

UI: updated icons from @billreynish

- black outlines (better readability).
- add bone roll.
- add extrude to cursor.

Draw Edit Curve Overlay: Fix the offset direction of the contour of selected handles

Fix missing action zones and emboss in the 3D viewport.

Not really happy with the fix, but it works. With the new window draw method
we are no longer storing the 3D viewport in 4 buffers, by having the GPU
viewport function directly as the 3rd buffer. This means we need to draw the
action zones into it, and so we need to keep the framebuffer bound a little
longer.

Create hash of material colors for copy buffer

UI: disable 3 column toolbars

They conflict a little with showing a narrow toolbar w/ text.

UI: multi-column toolbar support

Fix operators to use Materials instead of Palettes

UI: Bring Embossing for the top-bar and quad-view

Note: Quad-View region overlay drawing is not working because of e01cadd657c7.
However I tested this patch after reverting that commit locally and this
patch's code seems fine.

Partial revert of 3d62230ed673.

Convert old 2.7x files from Palettes to Materials

Clear deprecated colorname field when write data

This field must be cleared because the string is not used (deprecated).