Scripting and logging functionality for sysinst.
Child programs are run in a "display window" so you can actually see what
they did before the screen flashes back and you loose it all.
Lots of curses fixups. Removed nasty endwins that mangled the tty upon
rentry.
Change the yes/no box to accept Y or N, and not require cursor motion to
decide one or the other.
Perform curses redraws when doing things that could cause the kernel to
spew printfs onto your screen.
