By Stamos Prousalis KALAMATA, Greece (Reuters) -Rescuers scoured seas off Greece on Thursday in a massive search operation, as hopes dwindled of finding survivors of a shipwreck that killed at least 78 migrants in one of Europe's deadliest such disasters in recent years. Reports suggested hundreds of people had packed the fishing boat that capsized and sank early on Wednesday in deep waters about 50 miles (80 km) from the southern coastal town of Pylos, while being shadowed by the Greek coast guard. As dawn broke on Thursday, a coast guard vessel sailed into the nearby port city of Kalamata, t...
