Replace nearly all XXX0vv comments with smarter ones

So, back long ago, XXX012 meant, "before Tor 0.1.2 is released, we
had better revisit this comment and fix it!"

But we have a huge pile of such comments accumulated for a large
number of released versions!  Not cool.

So, here's what I tried to do:

  * 0.2.9 and 0.2.8 are retained, since those are not yet released.

  * XXX+ or XXX++ or XXX++++ or whatever means, "This one looks
    quite important!"

  * The others, after one-by-one examination, are downgraded to
    plain old XXX.  Which doesn't mean they aren't a problem -- just
    that they cannot possibly be a release-blocking problem.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/or/control.c b/src/or/control.c
index 2b69aafb77..1e90135e21 100644
--- a/src/or/control.c
+++ b/src/or/control.c
@@ -1863,7 +1863,7 @@ getinfo_helper_dir(control_connection_t *control_conn,
         *answer = tor_strndup(body, ri->cache_info.signed_descriptor_len);
     }
   } else if (!strcmpstart(question, "desc/name/")) {
-    /* XXX023 Setting 'warn_if_unnamed' here is a bit silly -- the
+    /* XXX Setting 'warn_if_unnamed' here is a bit silly -- the
      * warning goes to the user, not to the controller. */
     node = node_get_by_nickname(question+strlen("desc/name/"), 1);
     if (node)
@@ -1949,7 +1949,7 @@ getinfo_helper_dir(control_connection_t *control_conn,
       *answer = tor_strndup(md->body, md->bodylen);
     }
   } else if (!strcmpstart(question, "md/name/")) {
-    /* XXX023 Setting 'warn_if_unnamed' here is a bit silly -- the
+    /* XXX Setting 'warn_if_unnamed' here is a bit silly -- the
      * warning goes to the user, not to the controller. */
     const node_t *node = node_get_by_nickname(question+strlen("md/name/"), 1);
     /* XXXX duplicated code */