Fix #35459: global texture coordinates not working with GLSL shaders. Got broken
in shader uniform binding optimizations in revision 55527.

Fix #35469: image editor smear and soften paint tools not working correct for
float images, was not taking premul/straight convention into account properly.

Fluid simulation manual number of threads option now doesn't set the number
of threads to the number of cores when the fluid is created. Rather it is now
set to 0 which means "use the number of threads specified for the scene".

Fix compiler warnings with westin OSL code.

Fix to show numpad . instead of NDOF fit as first shortcut key in menus.

Related to #35452: show warning when unwrapping object with negative scale, same
as we already do for non-uniform scale.

Fix build error after removing return value from MEM_freeN.

svn merge ^/trunk/blender -c56907 -c56908

Fix for last fix, compile error in smoke code.

Fix #35407: different particle behavior compared to 2.66, reverted part of 56073.