Blender Git Loki

Cleanup: use struct names in ID comments

Fixed border extension for the sunbeams node.

This ensures that the beams color does not darken along borders,
by using the last valid color of the ray as the border color (extending
colors in the direction of the source point).

Projective painting:

* Make clone UI a bit more descriptive
* Don't set images to image editors that have a pinned image.

Freestyle: disallow with fields (was crashing)

Fix for Freestyle crash in bordered animation rendering

Fix T41891: Alt+S can't save image

win32 BLI_path_abs expanded empty strings into "C:\",
which made BLI_exists succeed (quite confusing).

Now match behavior on *nix.

Corrent recent commit: off by one error

Fix image.save() - incorrect relative lib path

Correct MAX_LIBARRAY define, assert when its wrong

Fix T41902: Flipped persp/ortho region_2d_to_vector_3d

- Ortho result from view3d_utils.region_2d_to_vector_3d was flipped.
- Persp result wasn't normalized.
- operator_modal_view3d_raycast.py failed for ortho views.

Thanks to Philipp Oeser for the initial fix.

Fix T41754, sunbeams node should return the unmodified source value at
the source pixel.

Tracking: Fix ground plane normal facing downwards

Fix T41890: Regression in new array modifier code, vnors were no more offset-corrected.

This is not needed when we tag normals as dirty, but in simple cases, if offset has some
rotation (or non-uniform scaling) component, vertex normals has to be corrected.

Py Template: Set the active object in batch export

Some exporters (mdd for example), only use the active object

Last minute artist feedback tweak: Fill tool should not use masking
apart from stencil(texture) and face masks.

Another minor correction, use "Mask" instead of "Stencil" so users can
correlate the panel to the mask tool.

Minor polishing, add UV layer selection in image projection painting
mode.

Paint system

* Add unified color settings to brush menus.
* Add notifier on fill tool from drag and drop to refresh icons

Cycles: Backward compatibility code for the Clamp splitting in 2.70.

If an older file (< 270) had clamp enabled, with e.g. a value of 2.0, Direct and Indirect clamp are now automatically set to 2.0 as well.

Cycles: Add a UI warning, in case the experimental GPU kernel is used.

The experimental kernel is slower and can cause issues on some cards still, so better communicate it well.