gitk: window size for Edit View, Preferences

I gave a short introduction to git a while ago, demonstrating gitk from a netbook. The "Edit View" window was not resizable to fit on the screen, also the window manager disallowed moving it up enough to get to the buttons adjusting the sorting.

I'm sure this is double PEBKAC (not using a good WM or configuring it right, not adjusting font size), but still, a vertical ruler for this and the Preferences window would be handy, and probably a quick two-line change for somebody with less rusty Tcl/Tk than me. Barring a patch, I'd be glad about pointers, too.

Thanks for git and gitk! Ralf