- fix windows compilation. Sqrt require double or float (not int).
- fix windows compilation. Sqrt require double or float (not int).

petertsoi/libmv,SoylentGraham/libmv,rgkoo/libmv-blender,keir/libmv,libmv/libmv,petertsoi/libmv,SoylentGraham/libmv,Nazg-Gul/libmv,rgkoo/libmv-blender,rgkoo/libmv-blender,libmv/libmv,keir/libmv,Nazg-Gul/libmv,rgkoo/libmv-blender,SoylentGraham/libmv,Nazg-Gul/libmv,keir/libmv,Nazg-Gul/libmv,libmv/libmv,petertsoi/libmv,rgkoo/libmv-blender,Nazg-Gul/libmv,libmv/libmv,keir/libmv,SoylentGraham/libmv,petertsoi/libmv