I haven't kept up with the various patches for NetHack that have been written (and updated) since NetHack 3.4.3 came out. Luckily, Pasi Kallinen has filled this void with his patch database which I highly commend to you.
The few links that I do have for NetHack 3.4.3 patches are as follows:
You may also find my patch collections for older versions of NetHack of interest: