Replace lockfile stuff with fifos instead.
Replace lockfile stuff with fifos instead.

Now people waiting for a lock can wait for the fifo to be ready, which means
it's instant instead of polled.  Very pretty.  Probably doesn't work on
Windows though.

pombredanne/redo,rowhit/redo,rowhit/redo,pombredanne/redo,dinkelk/redo-python,apenwarr/redo,pombredanne/redo,rowhit/redo,apenwarr/redo,dinkelk/redo-python,dinkelk/redo-python,apenwarr/redo,rowhit/redo,pombredanne/redo,dinkelk/redo-python,apenwarr/redo