[PATCH] frame focus update

[ I cross-post this to xemacs-beta so Greg can see it. All of my future patches intended for the distribution will be sent to xemacs-patches. ] This defines the new `set-frame-focus' function, as well as the new macros we discussed. src/ChangeLog: -- Hrvoje Niksic <hniksic(a)srce.hr&gt; | Student at FER Zagreb, Croatia --------------------------------+-------------------------------- "Memory is like an orgasm. It's a lot better if you don't have to fake it." -- Seymour Cray, on virtual memory