Fix for #1905: PythonLauncher not working correctly on OSX 10.5/Leopard

This fixes both Python Launchar and the terminalcommand module.
diff --git a/Lib/plat-mac/terminalcommand.py b/Lib/plat-mac/terminalcommand.py
index 292f09c..480797b 100644
--- a/Lib/plat-mac/terminalcommand.py
+++ b/Lib/plat-mac/terminalcommand.py
@@ -27,7 +27,7 @@
 
 def run(command):
     """Run a shell command in a new Terminal.app window."""
-    termAddress = AE.AECreateDesc(typeApplSignature, TERMINAL_SIG)
+    termAddress = AE.AECreateDesc(typeApplicationBundleID, "com.apple.Terminal")
     theEvent = AE.AECreateAppleEvent(kAECoreSuite, kAEDoScript, termAddress,
                                      kAutoGenerateReturnID, kAnyTransactionID)
     commandDesc = AE.AECreateDesc(typeChar, command)