[Patches] Patch to make tempfile return random filenames

[Jeremy Hylton]

>pps. while on the subject of security, i think the
>getpass module should raise an exception if it fails to
>get the tty into a non-echoing mode. it could fall
>back to stty...

The current version prints a warning message if the
password will be echoed.  The warning is printed 
for each call to getpass.  Is this sufficient or 
do you think that an exception is necessary?  Not sure myself.

Jeremy