Blender Git Loki

Cleanup: compiler warnings

Cleanup: comments, use sentences, some minor spelling corrections

Outliner: walk navigation operator

Adds a keyboard walk navigation and selection operator to the
outliner. Up and down arrow keys walk up and down the list of
elements, and left and right walk in and out or open and close
elements if the elements are open or closed.

Also moves opencolose toggling to the openclose operator to
remove duplicate code.

Also allows click+drag for openclose of element subtrees.

The outliner tree building is tweaked slightly to set the proper
parents in scene display mode for walk select to function
correctly.

LANPR: Fix background color.

LANPR: Rename Freestyle face/edge mark structures into LANPR.

Cleanup: Remove obsolete lanpr_access.h

Cleanup: lanpr operator py script.

Cleanup: make format.

Cleanup: Remove LANPR from editor CMakeLists.

Cleanup: Remove random useless files.

Cleanup: Remove obsolete LANPR includes from CMakeLists

Merge remote-tracking branch 'origin/master' into soc-2019-npr

Outliner: invisible object filter

Adds an invisible object filter in the outliner to show hidden
objects. This is useful to quickly locate hidden items in a large outliner
tree and easily toggle visibilty back on. Invisible refers to an object
being hidden, or viewport visibility restricted.

Merge branch 'master' into soc-2019-outliner

Merge branch 'master' into temp-soc-2019-outliner-sync

Outliner: Allow select on row icons

Allow selection of subtree elements on a collapsed element's
row. Because subtree elements are aggregated by type, a select on
an icon that represents multiple subtree elements will invoke a
popup menu to select the specific subtree element.

Also draws highlights on cursor hover over a row icon.

Cleanup: use doxy docs

Don't swap buffers of offscreen surface OpenGL contexts

This does frame syncing to the regular screen, so hurts performance in
some cases.

Cleanup: versioning comment for outliner syncing

Initial D5423 (by @howardt)