Thu Jun 28 01:38:52 PDT 2007 lennart.augustsson at credit-suisse.com
* Modernize printf.
Add instances for Int8, Int16, Int32, Int64, Word, Word8, Word16, Word32, and
Word64.
Handle + flag.
Handle X, E, and G formatting characters.
Rewrite internals to make it simpler.
M ./Text/Printf.hs -79 +114