Merkel ally says Islam not part of Germany

* Remarks start controversy at conference on Islam

* Row already brewing over Salafists handing out Koran

* Germany home to 4 million Muslims (Adds reaction, statement, background)

By Madeline Chambers

BERLIN, April 19 (Reuters) – A leading conservative politician said on Thursday that Islam did not belong in Germany, fuelling tension at a conference on integrating Muslims that also debated a controversial Salafist campaign to hand out copies of the Koran across the [...]