Petition by plaintiffs for discretionary review pursuant to G.S. 7A-31 denied 3 February 2000. Motion by plaintiffs’ attorney to participate as petitioner denied 3 February 2000. Notice of appeal by plaintiffs’ attorney pursuant to G.S. 7A-30 (substantial constitutional question) dismissed 3 February 2000. Petition by plaintiffs’ attorney for discretionary review pursuant to G.S. 7A-31 denied 3 February 2000.