darcs patch: Add UTF8 converting and outputing functions

Thu Oct 12 22:55:03 JST 2006 mukai@jmuk.org * Add UTF8 converting and outputing functions In GHC 6.6, the source code can include UTF-8 characters and converted them to Unicode chars. However, there are no (easy) way to convert them from/to UTF-8 in standard libraries of GHC. When outputing unicode characters in current GHC, hPutChar overflows their codepoints, and just prints lower 8-bit. This has not been a serious problem because past haskell programs contained few unicode characters. By now, the codes containing unicode characters become widespread because of supporting UTF-8 encoding. Therefore, base library must have some ways to deal with this problem, IMHO. Best regards, Jun Mukai mukai@jmuk.org