ndn-cxx, nfd: Bumping version of 0.2.0-rc2

nlsr: Bumping to the latest release

ndn-tlv-ping, ndn-traffic-generator, ndndump, repo-ng: Bumping ppa version to
force rebuild against the latest version of the library.
diff --git a/ndn-tlv-ping/Makefile b/ndn-tlv-ping/Makefile
index c500404..a3bac48 100644
--- a/ndn-tlv-ping/Makefile
+++ b/ndn-tlv-ping/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.1.0
 
 # PPA version
-PPA_VERSION=4
+PPA_VERSION=5
 
 include ../packaging.mk