BEIRUT (AP).- Syrian gunners pounded an opposition stronghold where the last dispatches from a veteran American-born war correspondent chronicled the suffering of civilians caught in the relentless shelling. An intense morning barrage killed her and a French photojournalist — two of 74 deaths reported Wednesday in Syria. “I watched a little baby die today,” Marie Colvin told the BBC from the embattled city of Homs on Tuesday in one of her final reports. “Absolutely horrific, a 2-year old child had been hit,” added Colvin, who worked for Britain’s Sunday Times. “They stripped it and found the shrapnel had gone into the left chest and the doctor said, ‘I can’t do anything.’ His little tummy just kept heaving until he died.” Colvin and photographer Remi Ochlik were among a group of journalists who had crossed into Syria and were sharing acco-