[Python-3000] the release gods are angry at python

[Thomas Heller]

>> test_winsound on this buildbot only passes when I have an open remote desktop
>> connection to the (virtual) machine.  I have not found any other way to make these
>> tests pass (I tried 'net stop beep', disabling the sound driver, removing the
>> sound driver, disconnecting the hosts sound driver, and maybe other things).
>> 
>> The only other thing hat I can image would be to disable the winsound tests...
> 
> Perhaps make it an optional resource?

What I would like to see is a way to disable certain tests on certain machines;
maybe by setting environment variables?

Thomas