Mulder purchase over.X-Files star Gillian Anderson has unveiled the series' long-awaited LEGO set, which goes on sale next month priced $200.Part of the LEGO Ideas range of fan-designed creations, X-Files (21369) is a 1,478-piece set which eight minifigures, including Fox Mulder, Dana Scully, Walter Skinner, Mr. X, Alex Krycek, Carl …