added and used PATH-TO-RHO-HOME so that examples look in the right place for files.

Documentation edits

move CLUNIT report format setting to after CLUNIT would be loaded.

Signed-off-by: AJ Rossini <blindglobe@gmail.com>
CASE$ for extracting a row/observation/case, or multiples.  Fixed.

Signed-off-by: AJ Rossini <blindglobe@gmail.com>
clean up of examples, especially CASE$

Signed-off-by: AJ Rossini <blindglobe@gmail.com>
starting to add unittests for CASE$

Signed-off-by: AJ Rossini <blindglobe@gmail.com>