Added punctuation class handling for iterative macros.  Cleaned up some more static memory pools -- lexemes and file I/O contexts.  Fixed a bug in operator expression reduction handling.
Added punctuation class handling for iterative macros.  Cleaned up some more static memory pools -- lexemes and file I/O contexts.  Fixed a bug in operator expression reduction handling.

madisongh/blissc,madisongh/blissc,madisongh/blissc