- If the class of the window is a known standard, then format the name

- If the class of the window is a known standard, then format the name
  of the WM_USER+nnn messages if possible.
- Fix case where the classname returned was truncated and not printed
  at all.
- Issue errors if either the Notify or common control messasge lists
  are out of order.
- Prepare to dump out control block structures pointed to by lparam
  for messages.