RFR 8171340: HttpNegotiateServer/java test should not use system proxy on Mac

[Wang Weijun]

Please take a review at

   http://cr.openjdk.java.net/~weijun/8171340/webrev.00/

All "openConnection()" modified to "openConnection(Proxy.NO_PROXY)".

Everything else is whitespace change.

Thanks
Max