Reorder text.
Added file header.
Renamed to try to make it more self-obvious.
Started a directory for minor utilities.
Added better argument processing and a real main().
Turned into a module.  It's now the module 'matlab'.
1. Modularized the parser code better, by putting it into a class ('MatlabGrammar') and putting the class in a module ('matlab').

2. Moved the converter to a separate directory, ../converter/.
1. Moved the converter to a separate directory after modularizing the parser.

2. Various adjustments to make things work after restructuring the parser code.
Moved this into the 'matlab' module.