added temporary memory test script for new translator

temporary script memtestn.in (template) tests the expression tests (all)
and the translator tests (currently 1 to 3 only) using the new
translator routine; CMakeLists.txt modified to generate memtestn

this is temporary until the new translator implementation is complete
corrected bug where access function did not return value

for some reason one of the error tests in translator test #3 worked
correctly when compiled with debug, but not with release; the

Translator::outputLastToken() access function did not have a return
statement (when compiled for release, a null pointer was used instead
of the correct pointer causing a segmentation fault)