Use ndn_memcpy and ndn_memset based on HAVE_MEMCPY and HAVE_MEMSET
diff --git a/ndn-cpp/util/ndn_memory.c b/ndn-cpp/util/ndn_memory.c
new file mode 100644
index 0000000..5863d44
--- /dev/null
+++ b/ndn-cpp/util/ndn_memory.c
@@ -0,0 +1,27 @@
+/*
+ * Author: Jeff Thompson
+ *
+ * BSD license, See the LICENSE file for more information.
+ */
+
+#include "ndn_memory.h"
+
+#if !HAVE_MEMCPY
+void ndn_memcpy(unsigned char *dest, unsigned char *src, unsigned int len)
+{
+ unsigned int i;
+
+ for (i = 0; i < len; i++)
+ dest[i] = src[i];
+}
+#endif
+
+#if !HAVE_MEMSET
+void ndn_memset(unsigned char *dest, int val, unsigned int len)
+{
+ unsigned int i;
+
+ for (i = 0; i < len; i++)
+ dest[i] = (unsigned char)val;
+}
+#endif
\ No newline at end of file