Another patch: Stop random GPFs on exit

[Harold L Hunt II]

Earle,

Thanks for the patch.  You did it exactly like I was thinking I would 
fix it.


Thanks for contributing,

Harold

Earle F. Philhower III wrote:

> Howdy Harold, it looks like you're really busy with the 4.3 updates,
> but here's another small patch for XWin that gets rid of the GPFs
> that sometimes happen when exiting the server w/-clipboard or -mwm.
> 
> Basically, the X server was closing connections to the threads who
> were then attempting to re-open them and restart their main loops.
> This is fine for a server reset, but for a server kill you don't want
> to re-open the connections because the info you've got (things like
> ScreenPtrs etc.) aren't valid anymore.
> 
> This patch just adds a notify call to the two threads which sets
> a flag so that when they do a longjmp() back to their main loops on
> an IO error they pthread_exit() and not attempt to re-access their
> passed in parameters/etc.
> 
> 
> -Earle F. Philhower, III
>  earle@ziplabel.com
>  cdrlabel - ZipLabel - FlpLabel
>  http://www.cdrlabel.com