[PATCH 0/5] unified sigio handling

[Peter Hutterer]

I left the first patch as-is because it's easy to cherry-pick to 1.12 this
way. I also left the xf86BlockSIGIO() calls in though I don't think outside
of the ddx actually uses them. We can probably drop them, either this cycle
or the next.

Cheers,
  Peter