Liz Taylor has always had them, and so do the new crop of film femmes. In fact they rarely go anywhere without them. They are personal makeup artists. And they are the latest Hollywood elite to come along. In fact many are upstaging the personalities signing their paycheques. Five years ago, few people knew the name Kevyn Aucoin, the famous artist to the stars who passed away in 2002. But now, you often hear either a name like Kevyn