Kollywood trade is getting jittery over the summer releases in the month of May. At end of the month for the big Eid/Ramzan weekend, Suriya’s eagerly awaited Selvaraghavan-directed political thriller NGK is going to clash with Vikram’s action-adventure Kadaram Kondan. The phenomenal opening of Avengers: Endgame in Tamil Nadu and the theatre owners’ reluctance to play new Tamil content has …