* transcode.c (transcoding): added a pointer to function to flush.
* transcode.c (transcode_loop): do not use string internal.
[ruby-dev:32512]
* transcode.c (str_transcode): allow Encoding objects.
* transcode_data.h (BYTE_LOOKUP): use actual struct name.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14176 b2dd03c8-39d4-4d8f-98ff-823fe69b080e