Combine the Rows of 2 Matrices

PAIRUP - Pairing up two matrices produces all ways rows from each can cat.

"Pairing up" two matrices produces all ways rows from each can concatenate.

Note that a (r,s) matrix and a (t,u) matrix provides that pairup will produce a ( r*t, s+u ) matrix.

Note that this requires REPROWS.M which is also submitted to
the MATLAB Central File Exchange - Utilities - Miscellaneous.

Example: A pairup of a 2-by-3 matrix and a 3-by-2 matrix will produce a 6-by-5 matrix.

A is
a b c
d e f

B is
u v
w x
y z

pairup( A, B ) is
a b c u v
a b c w x
a b c y z
d e f u v
d e f w x
d e f y z

I used this to prepare case datas for parallel processing in survey.