curses menu and text window size

Make final inventory disclosure use a full width menu instead of
the default 38-column width with lots of wrapping.  Also, increase
that default from 38 to 40 for the rest of the time.  Commit
9f6588af49 made the 38 vs 40 portion
matter much less but I decided to keep it in anyway.

When a menu or 'things that are here' popup has only a couple of
lines and they happen to be narrow, a sized-to-fit window isn't
always easy to spot when it is shown over the ends of old messages
rather than over the map, even with a border box around it.  Give
such windows a minimum size of 5x25 so that they always stand out
enough to be immediately seen.  This will cause more message text to
be rewritten occasionally (after dismissing the menu or text window)
but the curses interface seems to discount that as something to be
concerned about.

doc/fixes36.3

@@ -1,4 +1,4 @@
-$NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.74 $ $NHDT-Date: 1561717038 2019/06/28 10:17:18 $
+$NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.75 $ $NHDT-Date: 1561748351 2019/06/28 18:59:11 $
 
 This fixes36.3 file is here to capture information about updates in the 3.6.x
 lineage following the release of 3.6.2 in May 2019. Please note, however,
@@ -188,6 +188,8 @@ if you reach the edge of a level (relatively uncommon) and try to move off,
 	report that you can't go farther if the 'mention_walls' option is set
 wizard-mode: display effect to show where an unseen wished-for monster landed
 curses: enable latent mouse support
+curses: give menus and text windows a minimum size of 5x25 since tiny ones can
+	sometimes be overlooked when shown over old messages rather than map
 curses+'perm_invent': since persistent inventory is narrow, strip off "a",
 	"an", or "the" prefix on inventory entries shown there so that a tiny
 	bit more of the interesting portion is visible