Octave compatibility broken

[mhucka]

I didn't write down who originally emailed this to us, but some time ago, someone in discussion with Sarah pointed out the following problems when they tried to use a model written in Octave:

3. Octave file structure was adjusted to conform to the kind of nesting
   that MOCCASIN understands. Then when attempting to obtain rate-equation
   based SBML, this is what I notice:
   • The parser fails to understand that the pound symbol "#" is
     reserved for comments as it only expects "%".
   • The parser does not understand function handles in the Octave file
     as here, function names are passed in quotes, whereas in MATLAB they are
     preceded by @.
   • The "endfunction" statement in Octave needs to be understood as
     "end" in MATLAB, otherwise we get a "Could not locate a call to a Matlab
     function in the file" error.

These issues should be fixed.