dataColumns slot is ignored in FIML

The script models/failing/MultipleRegression_MatrixRawReverse.R is identical to models/passing/MultipleRegression_MatrixRaw.R except the 1st and 3rd columns of observed data have been switched (along with their column names). The dataColumns slot is assigned c(2,1,0) in MultipleRegression_MatrixRawReverse.R, but the correct answer is not being computed.

Fixed in revision 796. Tested in revision 798.