mtnamespace.h - added static opStrings to contain operators for tests

opStrings name is declared const static char, because it is declared
outside of a class.

Signed-off-by: Tony Camuso <tony@camusofamily.com>
mathtest - simplify logic and add comments

Most of the changes were cosmetic, as functionality was not changed,
neither were features added. Things were moved around, the runTest()
function was broken up and doProblem() was added to provide the
functionality moved out of runTest(). Test parameters are only inited
on the first pass.

Signed-off-by: Tony Camuso <tony@camusofamily.com>