[jhc] darcs patch: don't require 'error' to be in scope for... (and 2 more)

Sun Feb 5 22:11:51 PST 2012 John Meacham * don't require 'error' to be in scope for where pattern desugaring, process renaming errors before kind inference Sun Feb 5 22:13:04 PST 2012 John Meacham * add script to check for and remove unneeded imports from libraries, remove a bunch from lib/jhc/ Sun Feb 5 22:13:14 PST 2012 John Meacham * create Jhc.Class.Real to hold more advance numeric classes.