RFR: 7142123 test/java/net/ProxySelector/B6737819.java failing on all platforms since Mac OS integration

[Michael McMahon]

Can I get the following change reviewed please?

http://cr.openjdk.java.net/~michaelm/7142123/webrev.1/

The fix for 7141335 (on Mac) caused a regression on all platforms
breaking the fix fo 6737819. This was testing a very unusual usage of 
proxies,
but one we probably have to support anyway, which was the case where 
sometimes
someone might really want to connect to "localhost" through a proxy.

To support that case, this fix keeps the behavior introduced by 7141335 
except when
-D<proto>.nonProxyHosts exists, but is an empty string. In that specific 
case, there will
be no non-proxied hosts as required. But, in all other cases, the 
default non-proxy list will
be added to whatever was provided in the system property.

Thanks,
Michael.