[R-gui] Fixes for tcltk focus problems

[James Wettenhall]

Hi Duncan,

On Sun, 29 Aug 2004, Duncan Murdoch wrote:
>  - library(tcltk) now preserves the foreground window.
>
>  - In MDI mode, bringToTop() now brings the MDI frame forward before
> bringing forward the requested window within it.

Thanks for doing that!  As the author of two R-Tcl/Tk packages,
I really appreciate it!

Best regards,
James