RFR: 8072379: Implement jdk.Version and jdk.OracleVersion

[Iris Clark]

Hi.

Updated webrev and JavaDoc:

  Webrev

    http://cr.openjdk.java.net/~iris/verona/8072379/webrev.2/

  JavaDoc

    http://cr.openjdk.java.net/~iris/verona/8072379/doc.2/jdk/Version.html

Thanks,
iris

PS:  Please note that I'll be out the week of 21 December, back on 
4 January.  Access to e-mail will be intermittent at best.