By Kylie MacLellan and Dominique Vidalon LONDON/PARIS (Reuters) – Firefighters in southwestern France battled on Tuesday to contain massive forest wildfires and Britain recorded its highest ever temperature, while Portugal reported more than 1,000 heatwave-related deaths as Europe scorches. Southern and western Germany and Belgium were also braced for potentially record-breaking temperatures as the heatwave, which scientists attribute to climate change, edged north and east. Numerous wildfires were reported in Italy. One of the biggest blazes broke out on Monday night in the hills of Massarosa…