build: Fixing build and unit tests

Use only C++ and boost methods (memory copying, comparison, time
operations), which are guaranteed to be present on all platforms
with C++ and boost libraries.

Change-Id: Ia2883555c55909a4f7a877cf6d5fbd49b12c73c8
diff --git a/tests/wscript b/tests/wscript
index 73f722a..c63c031 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -7,6 +7,6 @@
         target="unit-tests",
         features = "cxx cxxprogram",
         source = bld.path.ant_glob(['**/*.cpp']),
-        use = 'lib-objects',
+        use = 'ndn-cpp-dev',
         install_prefix = None,
         )