(Fixes stock code display in paragraph 11, spelling of "too" in paragraph 10) * Floods force thousands to evacuate in two states * Death toll stands at four * Coal, rail, flights affected By James Grubel CANBERRA, Jan 29 (Reuters) - Massive summer floods have killed four people and forced thousands of people to evacuate their homes across two Australian states on Tuesday, disrupting air and rail travel and coal production.