CLAMART, France (AP) - Doctors fought to keep Yasser Arafat alive as anxious Palestinian officials looked for ways to prevent unrest if their 75-year-old leader, said to be in a coma Friday, dies. A swirl of reports saying Arafat had died Thursday were quashed by doctors at the French military hospital where he has been treated since being airlifted to France last week. Arafat's aides, however, acknowledged his condition was very serious. On Friday, Israeli Justice Minister Yosef Lapid told Israel TV's Channel Two that Arafat was brain dead and on life support. But a Palestinian spokeswoman denied Lapid's assertion....