yyredo and yy_use_redo_text

[David Relson]

Greetings,

I took a close look at the parser (file lexer_v3.l) and the functions 
yyredo() and yy_use_redo_text().  Having learned more about how flex works 
since those functions were written, I now know that a small lexer change 
eliminates the need for the function.  The change is good because the lexer 
is simplified (a little) and two rather intricate and hard to understand 
functions are now gone.

The changed code has been committed to cvs.

David