nfd: Update to the latest dev version

Change-Id: Id178cd84064871f514e746dec98ec5e40c61eb2a
diff --git a/nfd/Makefile b/nfd/Makefile
index e3afaa0..6175649 100644
--- a/nfd/Makefile
+++ b/nfd/Makefile
@@ -2,15 +2,15 @@
 GIT_URL=https://github.com/named-data/NFD.git
 
 # Tag name or commit hash for checkout
-GIT_VERSION=NFD-0.3.1
+GIT_VERSION=76c751ce80109cd429cd45d32a04015f7715546b
 
 # Package name
 NAME=nfd
 
 # Package version
-VERSION=0.3.1
+VERSION=0.3.1-3-g76c751c
 
 # PPA version
-PPA_VERSION=3
+PPA_VERSION=1
 
 include ../packaging.mk