flying into pits

In the newsgroup recently, someone mentioned that when polymorphed into
a flying monster, he couldn't retrieve items out of pits, even with the '>'
command.  I thought that we had fixed that, but the fix apparently only
covered walk-through-wall creatures (xorns and earth elementals), not flyers
and ceiling clingers.  Now those can also deliberately enter pits via '>'.

     The fixes entry is in the new features section in order to be next to
the xorn one.  '>' at pit locations is new, but it handles something which
was missing so feels more like a bug fix than a new feature to me....
[Keni, the bug page entry C343-12 about '>' (for xorns?) is general enough
to cover this fix, so we don't need to add a new one for flyers.]
I noticed an unrelated fixes35.0 entry mentioning '>' which was duplicated;
this removes one of the copies.

src/polyself.c

@@ -1324,7 +1324,11 @@ dohide()
 {
 	boolean ismimic = youmonst.data->mlet == S_MIMIC;
 
-	if ((u.utrap && u.utraptype != TT_PIT) || u.ustuck) {
+	if (u.ustuck ||
+		(u.utrap &&
+		    /* floor hiders (trapper) can hide while stuck in pits,
+		       ceiling hiders can't (after using '>' to get there) */
+		    (u.utraptype != TT_PIT || is_clinger(youmonst.data)))) {
 		You_cant("hide while you're %s.",
 			 !u.ustuck ? "trapped" :
 			   !sticks(youmonst.data) ? "being held" :