Remove pointless optional arguments in getbindings.
Don't create unneccessary match-lambda*.
Implement keyword arguments to define-match-expander.
Lots of refactoring of gen-match for general clarity.
Use combinators instead of writing our own loops.
Simplify struct info accessor.
Add timing printer.
Refactor coupling/binding for general clarity.
Rewrite logical-equal not to use the expansion of match.
General replacement of () with [].
svn: r4192
