Bump version to 1.17.15

debian/changelog

@@ -1,3 +1,9 @@
+dpkg (1.17.15) UNRELEASED; urgency=low
+
+  *
+
+ -- Guillem Jover <guillem@debian.org>  Mon, 06 Oct 2014 02:43:41 +0200
+
 dpkg (1.17.14) unstable; urgency=low
 
   [ Guillem Jover ]