mouse not dragging a float window.

[Colin Baxter]

I have pulled today's stumpwm git and built stumpwm using sbcl-2.2.7. It
appears to work except the mouse will now not drag a floating window. I
have tried click and sloppy focus policies without effect. I have looked
through the recent commits but don't see anything relevant. I would
appreciate some suggestions on how to resolve this.

Best wishes,

Colin Baxter.