releasing version 0.8.15.4

debian/changelog

@@ -1,4 +1,4 @@
-apt (0.8.15.4) UNRELEASEDunstable; urgency=low
+apt (0.8.15.4) unstable; urgency=low
 
   [ David Miller ]
   * apt-pkg/contrib/sha1.cc:
@@ -14,7 +14,7 @@ apt (0.8.15.4) UNRELEASEDunstable; urgency=low
       test)
   * refresh po/*
   
- -- Michael Vogt <mvo@debian.org>  Tue, 26 Jul 2011 11:58:27 +0200
+ -- Michael Vogt <mvo@debian.org>  Tue, 26 Jul 2011 12:12:27 +0200
 
 apt (0.8.15.3) unstable; urgency=low