* Change ShowTip() point parameter name to where.
* Add a parameterless ResetWindowFrame() overload that get's the current
where and calls ResetWindowFrame(BPoint where) which does the actual
work. FrameResized() calls this parameterless ResetWindowFrame()
method instead of doing the work in that method. This is functionaly
the same but allows me to call the parameterless ResetWindowFrame()
elsewhere.