ndn-cxx: Add replacement packages ndn-cxx, ndn-cxx-dev, ndn-cxx-dbg to avoid conflicts

Change-Id: I1cfe1b415c7ca1be62eb9db85644833a1241f997
diff --git a/ndn-cxx/Makefile b/ndn-cxx/Makefile
index e827a96..908c023 100644
--- a/ndn-cxx/Makefile
+++ b/ndn-cxx/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.6.1
 
 # PPA version
-PPA_VERSION=2
+PPA_VERSION=3
 
 include ../packaging.mk