[7u4] Request for approval for CR 7111903: (tz) Windows-only: tzmappings needs update for KB2570791

[Masayoshi Okutsu]

Request to push changes to 7u-dev. The code changeset will be identical 
to that seen in jdk8:

http://hg.openjdk.java.net/jdk8/tl/jdk/rev/cd6d236e863b
bug report: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7111903

Thanks,
Masayoshi