[7u4] Request for approval for CR 7158483 - (tz) Support tzdata2012c

[Yuka Kamiya]

Hello,

I'd like to backport my change to support the latest timezone data 
(tzdata2012c) in JDK 8 to 7u4.

CR:     http://bugs.sun.com/view_bug.do?bug_id=7158483
webrev: http://hg.openjdk.java.net/jdk8/tl/jdk/rev/d0e8c9361bc0

Thanks,
--
Yuka