In California, Gov. Gray Davis is fighting to broaden his authority By David Kravets, Associated Press, 1/2/2002 13:48 SAN FRANCISCO (AP) As he enters a tough re-election campaign, Gov. Gray Davis is assuming unprecedented powers that have landed him in court with key legislators and civil libertarians. Davis, a Democrat in the final year of his first term, has exercised emergency powers to cope with the electricity crisis, pushed to keep some criminals locked up indefinitely past their release dates, and tangled with the Legislature over his veto authority. ''He's certainly flexing political muscle,'' Santa Clara Law School scholar Gerald ...