C++ Interpreter

[John Rose]

Quick comment on parseHelper.cpp:

In the opto directory (C2) we try to avoid using #ifdef or LP64 when  
dealing with
wordSize issues.  Instead, there is a pseudo-type "X" defined in opto/ 
type.hpp,
as a series of macros for names which occur in both "int" and "long"  
versions.

Your change can probably be rewritten to use this convention.
You might need to add a symbol or two to type.hpp, such as "T_X"
for T_INT/T_LONG.  (Yes, the naming could use a cleanup.
But it's what we have, and it's far better than #ifdef.)

Thanks for doing this.  I'm going to try it out (which is why I had  
the comment).

-- John