Blender Git Loki

[build_deps/Windows] Add numpy headers to the python include folder on windows, required for D2716

[depsbuilder] fix outdated python patch on windows.

[depsbuilder] Fix broken osl flags on windows.

Cycles: Fixed broken camera motion blur when motion was not set to center on frame

Reviewers: #cycles, sergey

Reviewed By: #cycles, sergey

Subscribers: sergey

Differential Revision: https://developer.blender.org/D2787

Merge branch 'master' into blender2.8

Fix T52331: Motion blur shutter length not keyable

The only reason shutter time was marked as non-animatable is because Blender
Internal render does not support such animation. But this is something what
users are keeping asking for and now Blender Internal is on it's way out.

Enabled animation of this property, but noted in tooltip that Blender Internal
does not support animation of this property.

Fix T52391: Crash on duplicating material.

Bug in new ID copying code, thanks once again to stupid nodetrees, we
ended up wrongly remapping MA node->id pointers to NodeTree when copying
materials using node trees...

Cleanup: confusing naming in BKE_node_tree_copy_data().

New ID Copying code: fix node_tree_copy_data still potentially increasing usercount of its gpencil pointer.

_copy_data() functions of datablocks shall never handle that, it's done
by generic calling code in library.c.

Cycles: Guard memcpy to potentially re-allocating memory with lock

Basically, make re-alloc and memcpy from the same lock, otherwise one
thread might be re-allocating thread while another one is trying to
copy data there.

Reported by Mohamed Sakr in IRC, thanks!

Tracking: Fix missing checks in operator poll functions

Reported by Vuk Garda?evi? (lijenstina) in IRC, thanks!

Fix T51850: Motion tracking - poor performance with keyframe matching on large video

Enabled cache for frame accessor and tweaked policy so we guarantee keyframed
images to be always in the cache. The logic might fail in some real corner case
(for example, when doing multiple tracks at once on a system where we can not
fit 2 clip frames in cache) but things are much better now for regular use.

Tracking: Make frame accessor cache safe for threading

Tracking: Cleanup, newlines and comments

Tracking: Cleanup, de-duplicate code

Trackign: Add some basic logging about caching in frame accessor

Tracking: Make frame access cache aware of region

Cache is still kept disabled, need to think of a policy for cache cleanup.

Tracking: Correct comparison in cache keys

This code wasn't uses, but the key comparison was totally wrong.

Tracking: Cleanup and some comments

Move back master to BCon1 (aka alpha) status.

Forgot to do that the other week, master is no more 2.79 RC!