[Patch #827559 from Chris Gonnerman] Make SimpleHTTPServer redirect when a directory URL is missing the trailing slash; this lets relative links work.

Lib/SimpleHTTPServer.py

@@ -66,6 +66,12 @@ class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
         path = self.translate_path(self.path)
         f = None
         if os.path.isdir(path):
+            if not self.path.endswith('/'):
+                # redirect browser - doing basically what apache does
+                self.send_response(301)
+                self.send_header("Location", self.path + "/")
+                self.end_headers()
+                return None
             for index in "index.html", "index.htm":
                 index = os.path.join(path, index)
                 if os.path.exists(index):