Test matrix functions with matrices with clustered imaginary eivals. The idea is that these test MatrixFunction::swapEntriesInSchur(), which is not covered by existing tests. This did not work out as expected, but nevertheless it is a good test so I left it in.
Test matrix functions with matrices with clustered imaginary eivals.
The idea is that these test MatrixFunction::swapEntriesInSchur(),
which is not covered by existing tests. This did not work out as
expected, but nevertheless it is a good test so I left it in.

madlib/eigen,madlib/eigen,madlib/eigen,madlib/eigen