net: sort records returned by LookupSRV
net: sort records returned by LookupSRV

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/4518061

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go