GB2JIS converts GB2312-80 and GB8565-88 characters to
JISX0208-1983 and JISX0212-1990 characters. GB2312-80
(^[$A), GB2312-80 + GB8565-88 (^[$(E), and Chinese-EUC
(8-bit GuoBiao) are available for Hanzi code.
PR: ports/31849
Submitted by: Zhang Shu <jo-c@is.aist-nara.ac.jp>