Moved decl.c globals into instance globals.

src/display.c

@@ -716,7 +716,7 @@ register int x, y;
     register int see_it;
     register xchar worm_tail;
 
-    if (in_mklev)
+    if (g.in_mklev)
         return;
 #ifdef HANGUPHANDLING
     if (program_state.done_hup)
@@ -1232,7 +1232,7 @@ see_monsters()
     register struct monst *mon;
     int new_warn_obj_cnt = 0;
 
-    if (defer_see_monsters)
+    if (g.defer_see_monsters)
         return;
 
     for (mon = fmon; mon; mon = mon->nmon) {