ISLAMABAD, Pakistan (AP) - The mastermind of the Sept. 11 attacks helped lay the groundwork for the London subway bombings and a plot to strike Heathrow Airport, Pakistan's president says in his memoir. President Gen. Pervez Musharraf's "In The Line of Fire," released Monday, also says that the United States paid Pakistan millions of dollars in bounties to hand over some of the nearly 700 al-Qaida suspects arrested in his country, including the killers of Wall Street Journal reporter Daniel Pearl. Among those in U.S. custody is ex-al-Qaida No. 3 Khalid Sheikh Mohammed, the alleged Sept. 11 mastermind captured in...