Photo: Jacques Haillot/Apis/Sygma/Sygma via Getty Images Marianne Faithfull , an icon of 1960s British rock whose career went on to stretch seven decades, is dead at 78. Faithfull died “peacefully in London today, in the company of her loving family,” a spokesperson told the BBC . Her career took off after she met the Rolling Stones ’ producer and manager, Andrew Loog Oldham, at a party for the band in 1964. By June of that year, she had recorded and released “As Tears Go By,” one of the