Blender Git Loki

adaptive_cloth: AdaptiveMesh: fix: aspect ratio, wrong area

Must take the non directional area (absolute value of the area) since
the order of the verts of the face may not correspond to normal of the
face always. The aspect ratio calculation should not be doing the
inversion testing as well. (This could be used for inversion testing
but without proper math backing it, don't want to use it right now).