Blender Git Loki

Improved solution for Basic Camera rendering

I'm now duplicating the main camera memory instead of adding it in
bmain, same for camera datablock. This way the left and right cameras
are entirely invisible to the user.

Support for Basica camera rendering

Note: as of now this is creating multiple camera datablocks (and
unlinked objects) in the scene. I tried freeing them in the
render_free_stereo() routine, but it only set usercount to zero (so they
are still visible) and I get a crash when I leave Blender.

cleanup, using r_ for return parameters

Merge remote-tracking branch 'upstream/master' into multiview

Conflicts:
source/blender/blenloader/intern/versioning_270.c

Image Editor fixup, now ImageUser is always initialized properly, stereo
image loads right away and render images also display correctly

Multiview: refactor of UV/Image editor and image flags

* showing 3d only when image is 3d and show 3d is on
* improve logic in 3dview to only handle 3d when in camera
* setting show_stereo as default mode for image editor
* image and Imageuser flags re-arranged
* image IMA_IS_STEREO flag set when opening image =)

* missing: rendered image needs to be tagged as IMA_IS_STEREO too
* also in some cases I need to force to see a different render layer to
get everything working

Multiview: fix for crash when stereo was off

Multiview Base Commit 10/10: Splash Screen

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 8/10: Viewport 3D (camera)

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 9/10: Cycles Render

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview: support cltr+click rename for non left/right views

Multiview Base Commit 7/10: Window Manager (to draw in stereo 3d)

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 6/10: Compositor

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 2/10: Camera

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 3/10: OpenEXR/Imbuf - support for MultiPart EXR

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 1/10: Image

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 5/10: User Interface (renderlayers panel and
preferences)

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel

Multiview Base Commit 4/10: Everything else - integrating multiview in
render pipeline

This is part of the multiview rebase from a github to git.blender.org
repository. The rebase was made based on file areas, so build is likely
broken in some of those parts, but it bulds fine in the end.

The documentation and sample files were removed and now live in:
https://github.com/dfelinto/multiview-samples

The original git history can be found in:
https://github.com/dfelinto/blender/tree/multiview-pre-b3d

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

Original design made in contribution with Francesco Siddi
Original branch and design partially reviewed by Brecht Van Lommel