message: Added libnullpay.a to the staic linking in final stage of building
diff: @@ -178,6 +178,7 @@ ${TOOLCHAIN_DIR}/sysroot/usr/lib/libz.so \
  ${TOOLCHAIN_DIR}/sysroot/usr/lib/libm.a \
  ${TOOLCHAIN_DIR}/sysroot/usr/lib/liblog.so \
  ${LIBINDY_DIR}/libindy.a \
  +${LIBNULLPAY_DIR}/libnullpay.a \
  ${OPENSSL_DIR}/lib/libssl.a \
  ${OPENSSL_DIR}/lib/libcrypto.a \
  ${SODIUM_LIB_DIR}/libsodium.a \
  