Upgrade dependencies and build system

This commit switches to use official Google NDK version 16 with packages
created/installed using android-crew-staging tool derived from CrystaX
project.

Change-Id: I248fef2a871e44375512dcbf15a5f3166c0ab5de
diff --git a/app/src/main/jni/nfd.mk b/app/src/main/jni/nfd.mk
index c8e6818..77c27b8 100644
--- a/app/src/main/jni/nfd.mk
+++ b/app/src/main/jni/nfd.mk
@@ -6,7 +6,7 @@
 # nfd itself
 include $(CLEAR_VARS)
 LOCAL_MODULE := nfd-daemon
-LOCAL_SHARED_LIBRARIES := cryptopp_shared openssl_shared ndn-cxx $(addsuffix _shared,$(addprefix boost_,$(NFD_BOOST_LIBS)))
+LOCAL_SHARED_LIBRARIES := cryptopp_shared libcrypto_shared libssl_shared ndn-cxx $(addsuffix _shared,$(addprefix boost_,$(NFD_BOOST_LIBS)))
 NFD_DAEMON_SRC_FILES := \
     core/city-hash.cpp \
     core/config-file.cpp \