FIDIMIN, Egypt — This sleepy farming hamlet is where Omar Abdel Rahman — an extremist sheikh now serving time in US federal prison for conspiring to blow up the World Trade Center — gave some of his first fiery sermons. But even as Egypt’s political Islamists rise to power following last year’s ousting of Hosni Mubarak, Fidimin is breaking with its fundamentalist past, giving way to a more pragmatic political landscape ahead of the May 23 presidential election.