Version History
v1.1: Fixed non origin weighting, and random 6.0 issues, redesigned interface.
v1.2: Much improved performance.
v1.2.1: Removed three lines of code that cause the occasional unreliable result.
v1.3: Added ability to specify left and right naming prefixes; tweaked interface.
v1.4: Fixed placement of result meshes. Existing result meshes are now updated instead of being replaced (so you can now tweak your original symmetrical mesh and the script will modify your blendshape targets).
v1.4.1: Removed an optimization that resulted in incorrect weighting in Maya 7.
v1.5: Updated the script to work in 2012.
