Blender Git Loki

Freestyle: hide the Line Style tab from the Texture properties context when WITH_FREESTYLE build flag is off.

Freestyle: hide line styles from a scene in the Outliner when WITH_FREESTYLE build flag is off.

The Datablocks display mode still shows line style ID datablocks to keep track of line styles
hidden from user interactions in the Properties window.

Fix for crash when userprefs fails to read.

Code cleanup: spelling/indentation

Fix some nodes showing up as undefined after the fix in 79c345acc21b.

A bunch of nodes had invalid storage definitions that don't refer to an actual
DNA struct. Ref T40033.

Fix cycles crash after recent use alpha commit.

Cycles-Bake: Subsurface Scattering support (fix T40060)

This fixes the SSS Direct/Indirect passes as well as the Combined pass.
Patch reviewed and with fixes and contributions from Brecht van Lommel.

Note: displacement/bump map (related to the report) will be handled separately

Reviewers: brecht

Differential Revision: https://developer.blender.org/D503

Nodes: add absolute value operation to all math nodes

Reviewed By: dingto, brecht

Differential Revision: https://developer.blender.org/D507

Cycles: add support for "Use Alpha" option on image datablocks.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D486

Freestyle: minor code clean-up.

Freestyle: time/space optimization in stroke rendering without textures.

When strokes do not have textures assigned, UV coordinates are not computed now.
This will save a bit of time and space in stroke rendering.

Freestyle: debug statistics on stroke rendering.

Cycles-Bake: Ambient Occlusion needs to be computed for COMBINED

Now the COMBINED pass includes the Ambient Occlusion.

This was not reported anywhere, but while working in the Subsurface Scattering I realize we needed this fix for combined.

Fix T40033: Jumping between versions can lead to loss of node storage
data.

Saving a file with a new blender node that uses bNode->storage data and
then loading that in an older version will make the node undefined, but
still retain the original type identifier (in case it is defined later).

If the file is then saved over and loaded again in the newer version,
where the node type is defined, it won't have a valid storage struct.
To handle such cases gracefully, check if storage data is expected but
doesn't exist when initializing node types. User then at least get a
chance of fixing the problem manually.

Suggested fix by @brecht.

playanim: check for escape key while loading images

(todo from 2.4x)

Fix T40051: Inconsistent dupli vert/face handling of group member types

Fix for dropping images into the 3D View
- wasn't allocing image-user.
- wasn't managing user counts.

Fix T40052, Grid Particles Crash due to invalid empty mesh verts access
for bbox calculation.

Fix crash binding mdef with no faces

Remove redundant NULL check