Request for Review: 6905552

[Christopher Hegarty - Sun Microsystems Ireland]

Hi Alan, Michael,

Since we don't typically build on non-IPv6 systems, over a number of 
years the net/nio code has not maintained clean non-IPv6 code. This 
patch addresses that by excluding IPv6 specific code where AF_INET6 is 
not defined.

6905552: libnet/nio portability issues

Webrev:  http://cr.openjdk.java.net/~chegar/6905552/webrev.0/webrev/

-Chris.