“New Las Vegas doom crew Demon Lung harken back to the arching lurch of classic Candlemass and the distortion-caked tones of Electric Wizard, the band that ostensibly gave Demon Lung its name with their 1996 single. On “Heathen Child,” the highlight of their forthcoming debut, The Hundredth Name, they bury their consistent lede-- that is, the astonishing beckon of singer Shandra Fedrick. After a mi”