By Kirk Miller P.J. O’Rourke, a former editor-in-chief of National Lampoon and later a conservative/libertarian writer and satirist, died Tuesday at his home in Sharon, N.H., at the age 74. The cause was listed as lung cancer. Probably best known for his work at Rolling Stone and his best-selling book Parliament of Whores, O’Rourke’s political attacks often skewered, hilariously, any and all parties — and his wit got him ample time on talk shows and even NPR’s comedy quiz show “Wait, Wait … Don’t Tell Me.” Among his other credits include articles for The Atlantic, The American Spectator and Th…