to enable it for a game yet). In common code, break pick tile utils
method in two, one for blank and the other for tray tiles. In java,
implement dialog for picking the tiles. Works, though is a bit clumsy
to have the dialog come and go after every pick. Better would be a
dialog that stays up and accumulates picks -- but it'd have to know to
reduce the set of tile choices as letters are chosen. This'll do for
now.
deal with the output by removing params where possible and elsewhere
by adding XP_UNUSED macro wrapping __attribute__((unused)). There
should be NO change in function in spite of the large number of files.
