provide dungeon location in ^X feedback

Dungeon level wasn't included in ^X output, so it wasn't actually
giving all status fields and attempting to rely on it when turning
off 'status_updates' was leaving a gap in feedback for the player.
Add an extra line to the first section where character's name and
patron deity are reported, giving current location.
|You are in the Dungeons of Doom, on level 5.
or
|You are in the endgame, on the Elemental Plane of Fire.

The information is more explicit than the basic status field, but
you can already get similar information via #overview so it isn't
giving away extra info.

src/dungeon.c

@@ -71,7 +71,6 @@ STATIC_DCL void FDECL(traverse_mapseenchn, (BOOLEAN_P, winid,
                                             int, int, int *));
 STATIC_DCL const char *FDECL(seen_string, (XCHAR_P, const char *));
 STATIC_DCL const char *FDECL(br_string2, (branch *));
-STATIC_DCL const char *FDECL(endgamelevelname, (char *, int));
 STATIC_DCL const char *FDECL(shop_string, (int));
 STATIC_DCL char *FDECL(tunesuffix, (mapseen *, char *));
 
@@ -2775,7 +2774,7 @@ branch *br;
 }
 
 /* get the name of an endgame level; topten.c does something similar */
-STATIC_OVL const char *
+const char *
 endgamelevelname(outbuf, indx)
 char *outbuf;
 int indx;