Bmesh: Deprecate deform parameter of from_object()

The deform parameter of the Bmesh from_object method is deprecated,
always assumed to be True, and will be removed in version 3.0.

That is because the cases where it is False don't work correctly and are
subject to memory leaks. One of the symptoms of the incorrect behavior
is the application of constructive modifiers twice if the input object
is an evaluated one, as demonstrated in D10053.

Reviewed By: Brecht

Differential Revision: https://developer.blender.org/D10086

Fix: Bmesh from_object applies modifiers twice

The Bmesh from_object method applies modifiers twice when the input
deform is enabled and the input depsgraph is a render one.

The evaluated object already have modifiers applied, and
mesh_create_eval_final() applies modifiers again. To fix this, the
BKE_mesh_new_from_object() function is used instead.

Reviewed By: Brecht

Differential Revision: https://developer.blender.org/D10053

Fix T79803: Wrong Distance To Edge 1D Voronoi

The current 1D Voronoi implementation for the Distance to Edge option
computes the distance to the cells instead. This patch fixes that and
compute the distance to the edge.

Reviewed By: JacquesLucke, brecht

Differential Revision: https://developer.blender.org/D8634

UI: Only draw node menu search if categories exist

Currently, the search operator in the node add menu NODE_MT_add is drawn
even if no node categories exists. This patch only draws the operator if
at least one node category passes the poll.

This patch is needed because some add-ons use custom search operator and
do not register node categories. In this case, it is undesirable to have
a search operator drawn that do nothing and is not used. One such add-on
is Animation Nodes.

Reviewed By: Jacques Lucke

Differential Revision: https://developer.blender.org/D8576

Cycles: AVX implantation of Perlin noise.

This patch adds an AVX implementation of Perlin noise in Cycles.
An avxi type was also added as a utility based on the respective
type in Intel Embree.

Only 3D and 4D noise were implemented, there is no benefit for
utilizing AVX in 1D and 2D noise. The SSE trilinear interpolation
function was used in the AVX implementation because there is no
benefit from using AVX in interpolating the last three dimensions.

Differential Revision: https://developer.blender.org/D6680

Python: Expose WM is_interface_locked to python.

This patch exposes the Window Manager `is_interface_locked` as a read
only property to python.

This property is needed to allow script writers to detect if a job is
running with locked interface like the Alembic exporter.

Reviewed By: Brecht

Differential Revision: https://developer.blender.org/D6749

Cleanup: Remove period from RNA description.

Cleanup: Remove period from RNA description.

Python: Expose WM is_interface_locked to python.

This patch exposes the Window Manager `is_interface_locked` as a read
only property to python.

This property is needed to allow script writers to detect if a job is
running with locked interface like the Alembic exporter.

Reviewed By: Brecht

Differential Revision: https://developer.blender.org/D6749

Cycles: Suppress OSL normalize function warnings.

This patch suppress the OSL warnings resulted from ambiguous calls
to the normalize function. This is done by casting to the vector
type before normalizing.

Reviewed By: Brecht

Differential Revision: https://developer.blender.org/D6621