PORTLAND — A Vancouver couple will end a 46-year retailing adventure today at The Real Mother Goose in downtown Portland. Stan and Judy Gillis started selling handmade creations in downtown Vancouver in 1971, influenced by the hippie-era handicraft movement. They opened their flagship gallery in Portland in 1978, where the work of as many as 1,000 artists filled the shelves. Today, they’re trying to empty the place.