readlink: note that our -f is really -e

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/coreutils/readlink.c b/coreutils/readlink.c
index f7ad791..d73ef4d 100644
--- a/coreutils/readlink.c
+++ b/coreutils/readlink.c
@@ -39,7 +39,10 @@
  *   -q, --quiet, -s, --silent     suppress most error messages
  *   -v, --verbose                 report error messages
  *
- * bbox supports: -f -n -v (fully), -q -s (accepts but ignores)
+ * bbox supports: -f (partially) -n -v (fully), -q -s (accepts but ignores)
+ * Note: we export the -f flag, but our -f behaves like coreutils' -e.
+ * Unfortunately, there isn't a C lib function we can leverage to get this
+ * behavior which means we'd have to implement the full stack ourselves :(.
  */
 
 int readlink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;