repo-ng: Update to ndn-cxx 0.5.1

Change-Id: Ic76c591007d6c4d4dd4df00261da9c5fe02e6c8f
diff --git a/repo-ng/debian/control b/repo-ng/debian/control
index 933b301..5fca672 100644
--- a/repo-ng/debian/control
+++ b/repo-ng/debian/control
@@ -5,7 +5,7 @@
  dh-systemd (>= 1.5),
  python (>= 2.7.0),
  pkg-config (>= 0.26),
- ndn-cxx-dev (>= 0.5.0)
+ ndn-cxx-dev (>= 0.5.1)
 Standards-Version: 3.9.2
 Section: net
 Homepage: http://github.com/named-data/repo-ng
@@ -13,7 +13,7 @@
 Vcs-Browser: http://github.com/named-data/repo-ng
 
 Package: repo-ng
-Architecture: i386 amd64
+Architecture: i386 amd64 arm64 armel armhf ppc64el
 Depends: ${shlibs:Depends}, ${misc:Depends}, ndn-cxx
 Description: Next generation of NDN repository
  repo-ng is an implementation of a Named Data Networking data repository with the protocol