Please unblock graphviz 2.20.2-2

[Cyril Brulebois <kibi@debian.org>]

Hi,

please unblock graphviz 2.20.2-2, as it fixes a regression in one tool
of the whole set, making that tool useless:
| graphviz (2.20.2-2) unstable; urgency=low
| 
|   * Backport patch by Emden R. Gansner to fix a regression in tred, which
|     happened during the transition to cgraph (in 2.20.0), spotted by
|     Wouter Koolen-Wijkstra (Closes: #493494):
|      - debian/patches/10_fix_tred_regression
| 
|  -- Cyril Brulebois <kibi@debian.org>  Sat, 16 Aug 2008 07:29:59 +0200

The diff is enormous:
| --- a/cmd/tools/tred.c
| +++ b/cmd/tools/tred.c
| @@ -102,7 +102,7 @@
|  			agnameof(agtail(e)), agnameof(aghead(e)));
|  	    }
|  	} else
| -	    warn = dfs(aghead(e), e, warn);
| +	    warn = dfs(aghead(e), AGOUT2IN(e), warn);
|      }
|  
|      MARK(n) = 0;

Thanks already.

Mraw,
KiBi.

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