By Lenn Thompson, Executive Editor Dave Mudd, an outspoken leader and a tireless advocate for Long Island wine, died at his home in Southold over the weekend at the age of 90. Mudd planted his first vines the year after Alex and Louisa Hargraves planted Long Island's first commercial vineyard. He never made his own wine commercially, but the name of his vineyard has appeared on numerous labels over the years — most notably on wines made by Chris Tracy at Channing Daughters Winery. "He touched almost everyone who came after him and provided leadership, guidance and a vision that…