Prevent stopping on graves and engravings when running. This idea was…

… proposed by mobileuser and it makes for a much more pleasant experience in grave-heavy levels like the Valley of Death. When moving step-by-step you will still read engravings as normal.

src/engrave.c

@@ -327,6 +327,10 @@ int x, y;
     register struct engr *ep = engr_at(x, y);
     int sensed = 0;
 
+    /* We're running, we don't want to look at engravings. */
+    if (context.run)
+        return;
+
     /* Sensing an engraving does not require sight,
      * nor does it necessarily imply comprehension (literacy).
      */

src/hack.c

@@ -2236,7 +2236,7 @@ domove_core()
     if (context.run) {
         if (context.run < 8)
             if (IS_DOOR(tmpr->typ) || IS_ROCK(tmpr->typ)
-                || IS_FURNITURE(tmpr->typ))
+                || (IS_FURNITURE(tmpr->typ) && tmpr->typ != GRAVE))
                 nomul(0);
     }
 
@@ -3290,6 +3290,7 @@ lookaround()
             if (IS_ROCK(levl[x][y].typ) 
                 || levl[x][y].typ == ROOM
                 || levl[x][y].typ == ICE
+                || levl[x][y].typ == GRAVE
                 || IS_GRASS(levl[x][y].typ)
                 || (IS_AIR(levl[x][y].typ)
                     && !In_V_tower(&u.uz))) {