Changed front-end/back-end interface for embedding
1x1 matrices and algebras inside of another matrix.
Failing Model MultivariateConstraint.R shows a problem with MLObjective
Temporary fix on DGEMM error and update to non-positive-definite error message at tester's request.
Preparing symbol table for automatic generation.
Started adding old Mx functions to the list of matrix
operators and functions to pass to the back-end.