Important update:

- DataTree->GetStr return Member->Value or NULL if not found
- Rename DeviceCore EDataType to EMBDataType, avoid conflict with JSONpaser
- Add DataTree to FunctionCore with LoadConfig() method
- Change ProcessName to char * (from char[])
- JSONparse:
  - Rename RootPath to BasePath on all methods to reduce confusion
  - Allow FilePath to be NULL, add '/' if not present
  - Fixed Parsing sequence in ParseObject & ParseArray

DataTreeCore.cpp

@@ -534,10 +534,10 @@ const char * CDataTree::GetStr( TDataMember * BaseMember, const char * Path, con
     }
     else if (Member && Create && (Member->Type == jtNull)) {
         SetValue( Member, jtString, Default );
-        return Default;
+        return Member->Value;
     }
     else {
-        return Default;
+        return NULL;
     }
 }
 //---------------------------------------------------------------------------
@@ -554,11 +554,11 @@ const char * CDataTree::GetStr( TDataMember * BaseMember, const char * Path, int
     else if (Member && Create && (Member->Type == jtNull)) {
         SetValue( Member, jtString, Default );
         Len = Member->Len;
-        return Default;
+        return Member->Value;
     }
     else {
-        Len = strlen( Default );
-        return Default;
+        Len = 0;
+        return NULL;
     }
 }
 //---------------------------------------------------------------------------