[jhc] darcs patch: speed up parsing/lexing by using Name's ... (and 3 more)

3 Feb 2012

      Mon Jan 30 03:22:30 PST 2012  John Meacham 
  * speed up parsing/lexing by using Name's rather than Strings

Tue Jan 31 13:49:51 PST 2012  John Meacham 
  * make IO a newtype of ST

Tue Jan 31 17:59:18 PST 2012  John Meacham 
  * add DeNameable class to un-rename source before printing error messages.

Tue Jan 31 23:34:00 PST 2012  John Meacham 
  * Rework the internal class representation to separate instances from class declarations