Blender Git Loki

Camera tracking integration
===========================

Fix for camera solver on windows.

There were two problems:
- Static align in Eigen should be also disabled for libmv.
- SSBA doesn't work correct for windows when optimization is
turned on.

There's no other way rather than disable optimization for
the whole extern/libmv. This leads to 3-4x slowdown, but it's
really the only thing we could do now.

Keir is going to drop SSBA out and replace it with Bundler,
so it shouldn't be a major problem.