Add an old-http test case

This uses a trivial Python http server to test pulling from a static
http server.

tests/test-static-http

@@ -0,0 +1,41 b''
+#!/bin/sh
+
+hg clone old-http://localhost:20059/ copy
+echo $?
+ls copy
+
+# This server doesn't do range requests so it's basically only good for
+# one pull
+cat > dumb.py <<EOF
+import BaseHTTPServer, SimpleHTTPServer, signal
+
+def run(server_class=BaseHTTPServer.HTTPServer,
+        handler_class=SimpleHTTPServer.SimpleHTTPRequestHandler):
+    server_address = ('localhost', 20059)
+    httpd = server_class(server_address, handler_class)
+    httpd.serve_forever()
+
+signal.signal(signal.SIGTERM, lambda x: sys.exit(0))
+run()
+EOF
+
+python dumb.py 2>/dev/null &
+
+mkdir remote
+cd remote
+hg init
+echo foo > bar
+hg add bar
+hg commit -m"test" -d"0 0"
+hg tip
+
+cd ..
+
+hg clone old-http://localhost:20059/remote local
+
+cd local
+hg verify
+cat bar
+hg pull
+
+kill $!

tests/test-static-http.out

@@ -0,0 +1,26 b''
+requesting all changes
+adding changesets
+adding manifests
+adding file changes
+added 0 changesets with 0 changes to 0 files
+0
+changeset:   0:61c9426e69fe
+tag:         tip
+user:        test
+date:        Thu Jan  1 00:00:00 1970 +0000
+summary:     test
+
+requesting all changes
+adding changesets
+adding manifests
+adding file changes
+added 1 changesets with 1 changes to 1 files
+checking changesets
+checking manifests
+crosschecking files in changesets and manifests
+checking files
+1 files, 1 changesets, 1 total revisions
+foo
+pulling from old-http://localhost:20059/remote
+searching for changes
+no changes found