http: add test for recently fixed HTTP/1.0 keep-alive issue
http: add test for recently fixed HTTP/1.0 keep-alive issue

R=bradfitzgo, rsc, bradfitzwork
CC=golang-dev
http://codereview.appspot.com/4235056

Committer: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

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