KronProd:

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   Compute the Kronecker product.

   Since version 2.
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   Form:
   c = KronProd( a, b )
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   ------
   Inputs
   ------
   a             (m,n)  Matrix
   b             (p,q)  Matrix

   -------
   Outputs
   -------
   c             (mp,nq) Kronecker product

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	References:	Zhou, K., et. a. Robust and Optimal Control, Prenctice-Hall,
               1996, p. 25.
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