ndn-cxx: Update to the latest HEAD in order to address implicit digest handling in exclude filter

Change-Id: I95a7669718297a9d266e1b8ed6aef9d91ffdfa67
diff --git a/ndn-cxx/Makefile b/ndn-cxx/Makefile
index de3a86e..8eeb435 100644
--- a/ndn-cxx/Makefile
+++ b/ndn-cxx/Makefile
@@ -2,15 +2,15 @@
 GIT_URL=https://github.com/named-data/ndn-cxx.git
 
 # Tag name or commit hash for checkout
-GIT_VERSION=ndn-cxx-0.3.1
+GIT_VERSION=895395f7f666445712171bb7b7e82387682b3c84
 
 # Package name
 NAME=ndn-cxx
 
 # Package version
-VERSION=0.3.1
+VERSION=0.3.1-3-g895395f
 
 # PPA version
-PPA_VERSION=2
+PPA_VERSION=1
 
 include ../packaging.mk