RFR: 7132699 [macosx] Proxy using for connection to localhost

[Michael McMahon]

Can I get the following webrev reviewed please?

http://cr.openjdk.java.net/~michaelm/7132699/webrev.1/
On Mac, we read the system proxy settings and
by default the system sets a proxy bypass list. Unfortunately, this
default list doesn't contain some entries (like localhost) which we depend
on to be bypassed. So, the fix is to include our own default list 
together with
any additional ones provided by the system.

Thanks,
Michael.