Present proto feedback

[James Jones]

Hi Keith,

Thanks for incorporating all the suggested fencing in the present 
protocol.  I think the latest version looks good, and just had some 
minor feedback:

-I just noticed the email you listed for me in the Acknowledgements was 
incorrect.  It should be jajones 'at' nvidia.com.

-Should there be a UST version of PresentNotifyMSC as well?  I guess I'm 
unclear what this request is for.  Is it to implement things like 
glXWaitVideoSyncSGI?

Thanks,
-James