RFR: 7113349 JDK8 port to macosx

[Michael McMahon]

This is the webrev for the Mac OS changes for JDK8. It is pretty much
a straight merge of the current jdk7u-dev changes. It builds and passes most
JCK and regression tests with only a small number of failures.

http://cr.openjdk.java.net/~michaelm/7113349/jdk8/webrev.1/

There are three separate webrevs at the link above for the three separate
repositories affected (the top-level, corba and jdk). Obviously most of 
the changes
are in the jdk webrev. Comments welcome!

Thanks,
Michael.