Merge sort algorithm

This function executes what I think is the merge sort algorithm invented by John von Neumann in 1945

The function should be used like this:
sorted = fusioned( somevector )

Also contains a script that runs the algorithm N times and compares it with the function SORT from Matlab. It expresses how many times it was successful and how long it took.

As far as I know, the function is completely functional.
Tell me if you noticed otherwise. Send the vector that can produce an error.

@ ACx // February 2013