7u60 Request for phase 2 approval for CR 8020191 - System.getProperty( " os.name " ) returns " Windows NT (unknown) " on Windows 8.1

[Miroslaw Niemiec]

Jira bug:
https://bugs.openjdk.java.net/browse/JDK-8020191
SA request for review:
http://sa.sfbay.sun.com/mail-archive/8020191-corelibs/0001.html

webrev:
http://sa.sfbay.sun.com/projects/corelibs_data/7u-dev/8020191.0/

This is a low risk fix which helps us better support windows 8.1 in 
jdk7u. In JDK 8 since August 2013.