Blender Git Loki

Adding Scale Visual keying (and de-duplicated part of the code returning visual values to key).

fix for bug where weight paint would draw hidden faces but not draw then with the backbuffer (depth selection).

add zbuf/depth option to weight paint border & circle select

add zbuf/depth option to weight paint lasso select.

use foreachMappedVert for ED_mesh_pick_vert()

minor speedup ED_mesh_pick_vert, ED_mesh_pick_face_vert
avoid matrix multiply, use len_manhattan_v2v2

initial support for 'occlude background geometry' in weight paint mode.

Only support mouse vertex select at the moment.

style cleanup: wrap long lines (>200)

Merged changes in the trunk up to revision 53280.

Outliner:

Added drag-drop support for Groups. On drop in 3d window it creates an instance.

Todo: it adds this on 3d cursor position still. The existing drop-object-duplicate operator
is a Macro - with warning. For adding on mouse-cursor position we need a better
way (new function call, just use operator option).

Change default baking bias distance to 0.001 for new scenes

Would need to update startup.blend as well, but not so much familiar
with doing this nowadays.

Another "insanely" big code clean-up patch by Bastien Montagne, many thanks!

New Outliner "Blender File" option: the first entry couldn't be closed/re-opened.

Reshuffled data view for Outliner.

- The new "Main Data" option is now under the category "Blender File".
- That category also displays the Linked Library files.
(Including allows browsing what's used from this file)

Also fixed CTRL+click on names, crashed.

Cycles OSL: handle new getattribute constant folding with renderstate NULL check,
and fix #33654, distance to line segment function is not implemented but compiled
anyway, now it should give a compile error.

Bug - old code, not working for new outliner view: Click on World needed a context check.

code cleanup:
make vertex/weight flag names consistent
ME_EDIT_VERT_SEL --> ME_EDIT_PAINT_VERT_SEL
ME_EDIT_PAINT_MASK --> ME_EDIT_PAINT_FACE_SEL

also remove unused header BLO_soundfile.h

flush selection from vertex paint and weight paint modes when exiting, this isnt fool-proof, will need more work.

replace RNA_ID_type_name() with BKE_idcode_to_name_plural()

flush selection when switching weight paint vertex/face selection modes.