* ext/nkf/nkf-utf8/{nkf.c,utf8tbl.c}:
          imported nkf 2007-01-28.
          * Fixed: can't decode MIME encode JIS string.
          * Fixed: Fullwitdh-halfwidth conversion.
          * Support DoCoMo's and Softbank's EMOJI
          * Support CP932, CP5022x, eucJP-ms UDC
          * Support UTF-32 encoding
          * Support beyond BMP
          [ruby-dev:29700] [ruby-dev:29922] [ruby-dev:30144]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11647 b2dd03c8-39d4-4d8f-98ff-823fe69b080e