A preview of the mom of all art fairs, Art forty two Basel, June 15-19, 2011. Twelve of the nation’s prime 50 donors of 2011 are arts patrons, new Walmart to displace three Miami art fairs, and a tale of pretend Basquiats, Harings and Warhols. Artnet News MARCH ART-FAIR MADNESS IN NYCIt’s not just “Armory Week.” At least 10 art festivals are coming to New York this month. By Rachel CorbettA new report from The European Fine Art Foundation slices and dices the worldwide art market. Frieze New York GUIDE TO THE NEW FRIEZE WEEK NY by Rachel CorbettAn all …