Dave Grohl is widely considered one of the most-liked guys in rock and roll. Nobody has a bad thing to say about the wild, affable, always-smiling frontman of the Foo Fighters and former Nirvana drummer. Nobody, except William Goldsmith. For those of you who might not know Goldsmith, he was the founding member of Seattle group Sunny Day Real Estate and together with Nate Mendel bolted to join…