Changes to copyright notices in JDK 6

[Kelly O'Hair]

As mentioned in Mark's email (http://mail.openjdk.java.net/pipermail/jdk6-dev/2010-May/001558.html 
) this is the
first set of copyright changes for the openjdk6 sources.
Webrevs are somewhat impractical with this kind of change so I've  
provided a couple of 'hg diff' results:

   http://cr.openjdk.java.net/~ohair/rebranding/openjdk6/jdk6-master/

Assuming no obvious errors are detected in the next 2 days, I'll be  
pushing these changes into the openjdk6 repositories.

-kto