[Spice-devel] [PATCH xf86-video-qxl 0/4 v2] Modest improvements to Xspice vdagent support

[Jeremy White]

This patch series is a set of minor patches for XSpice around vdagent support.

It improves the documentation of the options, corrects an option that did
not work as expected, and handles an agent disconnection more intelligently.

The code changes in this second version are substantially different
than the first iteration.  Notably, this now connects and disconnects
the entire agent interface with the server, instead of only manipulating
the mouse state.

Also notably, it turns out that our FIFO does not need to be closed
and reopened.  Unconnected FIFOs 'normally' return 0 on a read, so handling
the 0 proved not to be all that useful.  It's more useful to stop watching
it when we do not have a connected agent.