SF bug #770601: CGIHTTPServer and environment variables (bug + solution)

(contributed by Vincent Delft.)

The script updated os.environ but failed to pass the whole environment
to the child process (the CGI script).

Lib/CGIHTTPServer.py

@@ -215,7 +215,7 @@ class CGIHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
                     pass
                 os.dup2(self.rfile.fileno(), 0)
                 os.dup2(self.wfile.fileno(), 1)
-                os.execve(scriptfile, args, env)
+                os.execve(scriptfile, args, os.environ)
             except:
                 self.server.handle_error(self.request, self.client_address)
                 os._exit(127)