bug#403: 23.0.60; two bugs with internal-border-width

[Chong Yidong]

> Evalling this form yields 0:
>
> (let ((f (make-frame '((internal-border-width . 20)))))
>   (prog1
>       (frame-parameter f 'internal-border-width)
>     (delete-frame f)))
>
> ... I expected it to yield 20.
>
> Also, once a frame is displayed, if I modify internal-border-width
> (changing it from 0 to 20, say), it can leave some garbage on the
> screen, where the new border should be.  recenter fixes this.

This seems to have been fixed in the meantime.  At least, it DTRT on my
machine (x86_64-unknown-linux-gnu, GTK+ Version 2.12.9).  Do you still
see this problem?