ndn-cxx, nfd: Package for initial public release (0.2.0)

Other updates:
- nlsr: Initial 0.1.0 release
- ndndump: Bump to version 0.5.1
- ndn-tlv-ping, repo-ng: Update to the latest version
- ndn-traffic-generator: Ensure package is rebuild against the latest ndn-cxx
diff --git a/ndn-traffic-generator/Makefile b/ndn-traffic-generator/Makefile
index cf68a41..c04aaf2 100644
--- a/ndn-traffic-generator/Makefile
+++ b/ndn-traffic-generator/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.0.1
 
 # PPA version
-PPA_VERSION=3
+PPA_VERSION=4
 
 include ../packaging.mk