re-organize files and remove DbMgr

Change-Id: I6667dad558994f1ebcdfb54ab0ec0ed61e2cccb6
diff --git a/src/ndns-enum.cpp b/src/ndns-enum.cpp
index efc1bbf..2631e38 100644
--- a/src/ndns-enum.cpp
+++ b/src/ndns-enum.cpp
@@ -32,8 +32,8 @@
     return "NDNS-Nack";
   case NDNS_AUTH:
     return "NDNS-Auth";
-  case NDNS_NULL:
-    return "NDNS-Null";
+  case NDNS_RAW:
+    return "NDNS-Raw";
   default:
     return "UNKNOWN";
   }