To test the PVS parser, make the MatlabParserOperatorParseTest generic.

Since any parser will have to test itself against a variety of operator, make
life simple and have one set of tests for all operators.  Also remove as much
code duplication as possible, by having one generic method that takes an operator
(as a String) and a parse function that handles calling the parse function
and compares the result as appropriate.

git-svn-id: https://groke.mcmaster.ca/svn/grad/colin/branches/TableTool_javization@10851 57e6efec-57d4-0310-aeb1-a6c144bb1a8b