[11u] RDR: backport JDK-8235834, JDK-8239976, JDK-8239976

[Ichiroh Takiguchi]

Hello.

I got jdk11u-fix-yes for following bug ids.

JDK-8235834 IBM-943 charset encoder needs updating [1]
JDK-8239976 Put JDK-8239965 on the ProblemList.txt [2]
JDK-8239965 XMLEncoder/Test4625418.java fails due to "Error: Cp943 - 
can't read properly" [3]

Please apply changesets in the following order.

Changesets are:
JDK-8235834 9b33b25a7198 [4]
JDK-8239976 16973c5b27be [5]
JDK-8239976 e44b68e5bdaf [6]

I'd like to obtain a sponsor for them.

[1] https://bugs.openjdk.java.net/browse/JDK-8235834
[2] https://bugs.openjdk.java.net/browse/JDK-8239976
[3] https://bugs.openjdk.java.net/browse/JDK-8239965
[4] https://hg.openjdk.java.net/jdk/jdk/rev/9b33b25a7198
[5] https://hg.openjdk.java.net/jdk/jdk/rev/16973c5b27be
[6] https://hg.openjdk.java.net/jdk/jdk/rev/e44b68e5bdaf

Thanks,
Ichiroh Takiguchi
IBM Japan, Ltd.