count is the total count passed into rpcrt4_conn_np_write.  If WriteFile
does a partial write it would end up writing too much subsequent times
through the loop.  All tests pass as before.

- Add the translations for REG_MULTI_SZ.
- Replace "Zeichenkette" with "Zeichenfolge" as that seems to be what
  Windows uses.
- Fix the size and placement of the "OK"/"Abbrechen" buttons.
- Remove bogus accelerators on some LTEXT entries in dialogs.

The return-path of the code will handle this properly and this also
ensures that the R8G8B8 dxVersion test is reached.