Blender Git Loki

Slight optimization of track preview widget (the same approach as in tomato branch)

Optimization of preview widget scaling.

Thanks to Campbell for pointing into issues.

svn merge ^/trunk/blender -r42372:42416

A (hopefully last) bunch of fixes and tweaks to UI label and messages (found while translating in french).

remove unused SpaceTime.redraws.

now there are no more use of deprecated struct member warnings.

Merging r42394 through r42412 form trunk into soc-2011-tomato

`#if 0` use of Object.nlastrips, there is no way to add or remove these from blender so better not run.

Fix for movie clips weren't remapped properly on file save

Fixed dark edges on preview widget sides: it was interpolating beyond the image bounds

Fix [#29502] Brush texture Preview panel doesnt show Alpha checkbox
* Added to the py UI file, it would require some deeper changes to have it in the c Template, can be done later.
* Fixed a typo.

remove old renderer struct member, was only used for setting yafray but was still being checked in a few places,

Use own bilinear interpolation function for preview widget sampling

Solves issue with image clamping, but issue with dark edge is still present

Fix compile issue on windows, broke this trying to fix for mac.

fix building on openbsd, also quiet some warnings.

Fix warning for redefinition of __MSVCRT_VERSION__

Fix MinGW compilation:

define __MSVCRT_VERSION__ to 0x0700 (microsoft runtime msvcr70.dll) so _aligned_malloc is defined.

Small code cleanup of tracking.c

Fix of pattern position clamping

Add minimum correlation widget to tracker default settings panel.

Remove an unused parameter from tracking.c