Primal Scream released their aggro electronic rock masterpiece XTRMNTR in 2000, which means it turned 25 this year. The band celebrated that quarter-century anniversary tonight with a full-album performance at the Roundhouse in London. For the main set, Bobby Gillespie and his band — which, sadly, did not feature the dearly departed Mani or XTRMNTR sonic guru Kevin Shields, whose …