Mosek support via expopt

(closes #1)

I got it working in the existing framework! But it's only twice as fast as CVXopt on my old computer?!
This even though the profiler says that it's spending >90% of its time running their C code...maybe:
  - your computer is incredibly quicker than mine, or
  - that simple aircraft example wasn't the example you anticipated a 30x speedup for, or
  - Windows is terrible, or
  - their matlab implementation is pulling some additional tricks (e.g., multithreading).

Also, note that this branch contains some of Mosek's example code...is that kosher?