[PATCH mouse] bsd: Don't try to use SIGIO for input ABI >= 23

[Adam Jackson]

On Tue, 2016-06-07 at 13:57 -0700, Keith Packard wrote:
> Adam Jackson <ajax at redhat.com> writes:
> 
> > That certainly would be a less icky solution though, will send an
> > update.
> 
> Might be better to leave it for someone able to test the result?

I suppose. The code is almost certainly broken as-is though, I can't
imagine trying to do both sigio and threaded input on the same fd would
go well (or be in any way reasonable to support).

That said we're not masking sigio off from the input thread, which is
probably also worth fixing.

- ajax