net = mlpunpak(net, w)
net = mlpunpak(net, w) takes an mlp network data structure net and
a weight vector w, and returns a network data structure identical to
the input network, except that the first-layer weight matrix
w1, the first-layer bias vector b1, the second-layer
weight matrix w2 and the second-layer bias vector b2 have all
been set to the corresponding elements of w.
mlp, mlppak, mlpfwd, mlperr, mlpbkp, mlpgradCopyright (c) Ian T Nabney (1996-9)