hg: jdk10/jdk10/jdk: 8186751: Add ISO-8859-16 Charset support

[xueming.shen at oracle.com]

Changeset: 4846f1bc6d2b
Author:    sherman
Date:      2017-09-01 08:15 -0700
URL:       http://hg.openjdk.java.net/jdk10/jdk10/jdk/rev/4846f1bc6d2b

8186751: Add ISO-8859-16 Charset support
Reviewed-by: alanb

+ make/data/charsetmapping/ISO_8859_16.map
! make/data/charsetmapping/charsets
! src/java.base/share/classes/sun/nio/cs/Unicode.java
! src/jdk.charsets/share/classes/sun/nio/cs/ext/GB18030.java.template
! test/java/nio/charset/Charset/CharsetContainmentTest.java
! test/java/nio/charset/Charset/RegisteredCharsets.java
! test/sun/nio/cs/TestCharsetMapping.java