change almost all uses: s/IS_DEVICE/RESOLVE_DEVICE/

Use this command:
  git grep -l -w IS_DEVICE|xargs perl -pi -e \
    's/\b(?:IS_DEVICE)\b( \(.*?,) (.*?)\)/RESOLVE_DEVICE$1 return $2)/'

daemon/file.c

@@ -391,7 +391,7 @@ do_file (char *path)
   char *buf;
   int len;
 
-  NEED_ROOT_OR_IS_DEVICE (path, NULL);
+  NEED_ROOT_OR_IS_DEVICE (path, return NULL);
 
   if (strncmp (path, "/dev/", 5) == 0)
     buf = (char *) path;