Blender Git Loki

I implemented method to exact volume preservation.

* Added ability to emit smoke directly from mesh surface and volume without particles. (Now default flow type)
* Surface emission strength can be controlled using vertex groups.
* Surface emission can have normal or mesh movement directional initial velocity.
* Refactor and cleanup of smoke emission code.
* Fixed "quick smoke" to work with branch changes.
* Added debug code for visualization of velocity and heat.

Merge with trunk r47460

Eigen3 CG does converge now, but only 1 round is a bit too fast, somethings still wrong

Fix for r47301. Not handling this return value caused text areas to misbehave.

Don't allow the user to auto-close the info area. Most users want it always open and new users don't want to accidentally close it.

I implemented special treatment for vertices on boundaries.

merge with trunk 47382

Bake Object constraint animations.

Unreferenced local variable (no need to create an instance to use a static function)

Extra semi-colon removed.

Merge from trunk r47089-r47354

Fixed a build error that occurred when compiling WITH_GPU_SAFETY

Fix for r47301

Check if select faces are triangles.
Use f->len > 3, Suggested by Campbell Barton

Area constraint added.

Fix for using the scroll wheel on and around color pickers and menus, after the non-modal change. Hovering the mouse over the color picker/menu will scroll in the picker/menu, and hovering the mouse elsewhere will scroll whatever's underneath. Relies on r47251

Optimizing the code to reduce the number of accesses and loops to the structure.

Adding support for OpenGL ES 2.0 on linux.
It is not full, some stuff will be shuffle around.
Cmake file is comming up

Check if all faces are triangle