test1509: verify proxy header response headers count

Modified sws to support and use custom CONNECT responses instead of the
previously naive hard-coded version. Made the HTTP test server able to
extract test case number from the host name in a CONNECT request by
finding the number after the last dot. It makes 'machine.moo.123' use
test case 123.

Adapted a larger amount of tests to the new <connect> style.

Bug: http://curl.haxx.se/bug/view.cgi?id=1204
Reported by: Martin Jansen

tests/data/test287

@@ -11,12 +11,11 @@ proxytunnel
 # Server-side
 <reply>
 
-# this is returned first since we get no proxy-auth
-<data nocheck="yes">
+<connect nocheck="yes">
 HTTP/1.1 405 Method Not Allowed swsclose
 
 And you should ignore this data.
-</data>
+</connect>
 
 </reply>
 
@@ -29,15 +28,15 @@ http
 HTTP proxy CONNECT with custom User-Agent header
  </name>
  <command>
-http://test.remote.example.com:287/path/287 -H "User-Agent: looser/2007" --proxy http://%HOSTIP:%HTTPPORT --proxytunnel
+http://test.remote.example.com.287:%HTTPPORT/path/287 -H "User-Agent: looser/2007" --proxy http://%HOSTIP:%HTTPPORT --proxytunnel
 </command>
 </client>
 
 # Verify data after the test has been "shot"
 <verify>
 <protocol>
-CONNECT test.remote.example.com:287 HTTP/1.1
-Host: test.remote.example.com:287
+CONNECT test.remote.example.com.287:%HTTPPORT HTTP/1.1
+Host: test.remote.example.com.287:%HTTPPORT
 Proxy-Connection: Keep-Alive
 User-Agent: looser/2007