added note in todo about selective porting

pd/nw/todo.txt

@@ -242,6 +242,8 @@ Everything else: (A [x] means we've fixed it)
     6084c8e5f86d1521edde3a899a6d5b5821aa27c6
     "*fixed bug reported by Gilberto in..."
 [x] same for 50719c4c455291be3ac679486f7e4d72706bd9e4
+    (note: we didn't update the major/minor release
+     macros to 0.43 here.)
 [ ] same for a620228554d1662bacd0f2f8cfc65259049164ec
 [ ] same for "*fixed spaces in old UI objects that were converted to \t..."
     262447434c3548c53bc0b52e7f5bb5431b233311