Blender Git Loki

Revert "Fix crash on Collada exporter"

This reverts commit bd7060a87fd9f46c2bdd141e26934e8573c6e3f8.

I mixed two commits together (a fixup for outliner tooltips and a collada fix).
Re-committing them individually.

Fix crash on Collada exporter

Outliner: Tooltips for reorder operators

I really would prefer if we were to use the dropbox API for this.
That said, we now have some tooltips that work.

I'm using the new draw callback draw API for outliner tooltips.

Reviewers: mont29

Subscribers: venomgfx, mano-wii, Severin

Differential Revision: https://developer.blender.org/D3020

Fix harmlness RNA warning in image texture node drawing.

Fix part of T53080: all material previews re-rendering after undo.

This reverts commit dc2617130b2e1d7d2b9892fbd7c6e7b60caafb66, which disabled
writing of previews for undo. While this uses some memory, re-rendering all
previews is very expensive, especially if for example you have lots of materials
using high-res image textures.

Code cleanup: simpler and faster detection of BVH refit.

Fix navmesh creation w/ multiple objects

D2976 by @dertom

make_quickie: replace os.system w/ subprocess.call

icon update: replace os.system w/ subprocess.check_call

project_info: replace os.system w/ subprocess.check_call

Tests: replace os.system w/ subprocess.call

Saves on process creation and avoids
being tripped up by command line parsing.

Based on D2967 by @ldo with edits.

Docs: invoke_search_popup uses bl_property

Also add code example in docs.

Outliner: Implement Add (Ctrl) when moving objects inside collection

Note there is no "text" explaining to users what is going on.
I will address this shortly in an upcoming commit.

Layer: Update outdated code comment

Merge remote-tracking branch 'origin/master' into blender2.8

Cycles: rename displacement methods, default to displace, tweak panel layout.

Differential Revision: https://developer.blender.org/D3019

Fix T53874: OpenGL render problem with OpenEXR in 2.8 with float buffers.

No need to tag depsgraph id when dropping objects from the outliner

As done by c42fc19a8a1c71 - this was needed originally because notifiers were
not working so I had to force tagging.

And for the records, I should have used DEG_TAG_BASE_FLAGS_UPDATE instead of 0.

Fix Eevee error message

That said, this should be informed to the user, not printed in the console.

Fix missing broken notifiers

We can't have more than one NOTE_SUBTYPE in the same notifier.
Instead of calling both subtypes the code end up not calling either.