kqueue on OSX

[ry at tinyclouds.org]

I've been having good experiences with libev + kqueue + recent
versions of OSX. I'm not sure what changed or when it changed - a
while ago it was definitely buggy.  (Maybe stdio fds point to pipes
rather than devices now?) Anyway, here's what I'm using:

  #if defined(__APPLE_CC__) && __APPLE_CC__ >= 5659
    ev_default_loop(EVBACKEND_KQUEUE);
  #endif

Just thought I'd send a note since, I imagine, Marc isn't testing OSX
very often.



Ryan