make the first response get a "connection: close" header as that is how

most 1.1 connections will be closed. The case where it gets closed anyway
is subject for a new separate test.

tests/data/test91

@@ -8,6 +8,7 @@ WWW-Authenticate: NTLM
 WWW-Authenticate: Basic realm="daniel"
 Content-Type: text/html; charset=iso-8859-1
 Content-Length: 0
+Connection: close
 
 </data>
 
@@ -41,6 +42,7 @@ WWW-Authenticate: NTLM
 WWW-Authenticate: Basic realm="daniel"
 Content-Type: text/html; charset=iso-8859-1
 Content-Length: 0
+Connection: close
 
 HTTP/1.1 401 Now gimme that second request of crap
 Server: Microsoft-IIS/5.0