Add a third processor type to the .so, and fix first compile-time
warnings and then a few dumb bugs based on assumptions about ptr sizes.
Works to play networked games and browse wordlists, but is not
extensively tested and needs to be before release.
Make face-up tile picker util method return void and add mechanism for
passing in selected tiles asynchronously, as has been done recently with
the rest of the once-blocking util callbacks. Works perfectly in the gtk
case. Likely crashes in curses (if picking face-up option is on.) In
java all the callbacks are there but rather than put up a UI we pretend
the user says "pick 'em for me" each time. Putting up a UI is next.
