MABTON — The old Mabton High School has a new roof but otherwise looks the same.
Boarded-up windows, graffiti-etched walls and overgrown weeds.
But don't write it off yet, say developers. They certainly haven't.
"We're not giving up yet," said Paul Purcell, a Seattle developer who envisions the 1911 building as a wine bistro, bed-and-breakfast, retail center and tourist draw to a town that really needs an economic boost.
Purcell and his partners, among them historical architect Les Tonkin, bought…