hg: jdk/sandbox: 8220281: IBM-858 alias name is missing on IBM00858 charset

[chris.hegarty at oracle.com]

Changeset: 41b79b3e21fb
Author:    itakiguchi
Date:      2019-03-15 00:49 +0900
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/41b79b3e21fb

8220281: IBM-858 alias name is missing on IBM00858 charset
Summary: Add aliases into IBM charsets
Reviewed-by: naoto

! make/data/charsetmapping/charsets
! test/jdk/sun/nio/cs/TestIBMBugs.java