HOLLYWOOD — A flurry of parties for international TV program buyers took place last week during the annual L.A. Screenings sales bazaar. Universal Intl. TV hosted a bash at its Farmclub.com set at Universal Studios on Saturday, which was attended by 300 people, while 1,800 people rocked past 1 a.m. at WB’s affair on its lot complete with the B-52s. Par’s annual dinner May 25 attracted more than 1,000 foreign buyers to the studio back lot. Saban Entertainment, Pearson TV and HBO Latin America also partied.