I noticed that mouse wheel events might trigger mouse avoidance. That
seems inappropriate. The attached patch should fix that.

Please notice that I am a bit unsure about what the event names could
be. There are probably more event names than those I have entered. In
keyboard.c there is the following code:

static char *lispy_wheel_names[] =
{
   "wheel-up", "wheel-down", "wheel-left", "wheel-right"
};



In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
  of 2008-08-10