FW: Chinese timezones do not observe DST

[Paul Eggert]

> From: Pulbere, Alexandru [mailto:Alexandru.Pulbere at cognos.com]
> Sent: Thursday, August 05, 2004 6:56 PM
>
> (my copy).

That change isn't necessary, since the Rule lines say that China last
used DST in 1991, so zic can deduce that no transitions occurred after
1991.  For example, here's what I get if I run the command "zdump -v
Asia/Shanghai | tail -n 6" without your change:

Asia/Shanghai  Sat Apr 13 15:59:59 1991 UTC = Sat Apr 13 23:59:59 1991 CST isdst=0
Asia/Shanghai  Sat Apr 13 16:00:00 1991 UTC = Sun Apr 14 01:00:00 1991 CDT isdst=1
Asia/Shanghai  Sat Sep 14 14:59:59 1991 UTC = Sat Sep 14 23:59:59 1991 CDT isdst=1
Asia/Shanghai  Sat Sep 14 15:00:00 1991 UTC = Sat Sep 14 23:00:00 1991 CST isdst=0
Asia/Shanghai  Mon Jan 18 03:14:07 2038 UTC = Mon Jan 18 11:14:07 2038 CST isdst=0
Asia/Shanghai  Tue Jan 19 03:14:07 2038 UTC = Tue Jan 19 11:14:07 2038 CST isdst=0