As we know from some point clients start to refuse transactions without fee. A friend of mine sent me 0.1 BTC as a donation using old client (0.3.20 or so) which doesn't include fee. So that transaction was never confirmed but money can't be lost either because it wasn't included in any block. How can we recover it back to spend using the newer version? Or maybe I'm wrong somewhere because I have transactions with no fee but I use -addnode=173.242.112.53 and he obviously doesn't because he's not so good in bitcoin even having an older client.

P.S. there is a little possibility that he had fooled me and sent nothing but let's think of it as it really happened.