Add default skel for unit tests. Move test programs to demo.

test/test.c

@@ -0,0 +1,23 @@
+#include "test.h"
+
+static void create_test_suite()
+{
+	add_node_suite();
+} 
+
+int main(int argc, char **argv)
+{
+	CU_pSuite pSuite = NULL;
+
+	/* initialize the CUnit test registry */
+	if (CUE_SUCCESS != CU_initialize_registry())
+		return CU_get_error();
+	
+	create_test_suite();
+
+	/* Run all tests using the console interface */
+	CU_basic_set_mode(CU_BRM_VERBOSE);
+	CU_basic_run_tests();
+	CU_cleanup_registry();
+	return CU_get_error();
+}