Cheney Due to Lash Into Kerry in Speech NEW YORK - Vice President Dick Cheney was stepping up to denounce Democrat John Kerry's "confusion of conviction" after President Bush formally won the Republican nomination for a second term in a carefully choreographed GOP convention roll call.    The second day of the convention brought out thousands of protesters who set out on a march to the convention site, getting in the way of a busload of delegates and engaging in shouting matches with officers around Manhattan...