and David ThomasUnless Gov. Bruce Rauner picks up the veto pen, hundreds of pieces of lingering legislation will automatically become law, some as soon as this week.Under the Illinois Constitution, legislation pending before the governor that hasn’t been signed or vetoed within 60 days automatically becomes law. The current slate of pending measures include revisions to how the state registers voters, protects data, fights wage discrimination and even lets residents change the gender on their birth certificates …