By Alexandra Ulmer CARACAS (Reuters) - Streaming down from hilltop slums in the dead of night, hundreds of Venezuelans join an ever-growing line that circles the vast "Bicentennial" state-run supermarket. Many of them used to be devoted supporters of Hugo Chavez, the late socialist president who brought his quirky brand of left-wing nationalism to the OPEC nation during a 1999-2013 presidency. Now, in the grumbling of pre-dawn lines, there is disillusionment with Chavez's "Beautiful Revolution" and undisguised anger at his successor and self-declared "son" Nicolas Maduro.
