NAC, ndn-traffic-generator, ndncert, repo-ng: Update to the latest versions

Change-Id: I41dedf689e1c4060021c6a01e86bf3f652e96dbe
diff --git a/repo-ng/Makefile b/repo-ng/Makefile
index 12884be..608cff5 100644
--- a/repo-ng/Makefile
+++ b/repo-ng/Makefile
@@ -2,13 +2,13 @@
 GIT_URL=https://github.com/named-data/repo-ng
 
 # Tag name or commit hash for checkout
-GIT_VERSION=333e3ebfb537d5aca977478f363e5d32a74b7be5
+GIT_VERSION=164ae3b36d05d7a3af522f86cd80eb3c650ae65b
 
 # Package name
 NAME=repo-ng
 
 # Package version
-VERSION=0.0.24-g333e3ebfb
+VERSION=0.0.25-g164ae3b36
 
 # PPA version
 PPA_VERSION=2