expand wincap options to second field

<Someone> wishes to add a couple of new options to the wince port ("run fullscreen" and "do not use CE software keyboard").

The wincap field was full, so this adds a second field for
additional options.

win/tty/wintty.c

@@ -50,6 +50,7 @@ struct window_procs tty_procs = {
     WC_MOUSE_SUPPORT|
 #endif
     WC_COLOR|WC_HILITE_PET|WC_INVERSE|WC_EIGHT_BIT_IN,
+    0L,
     tty_init_nhwindows,
     tty_player_selection,
     tty_askname,