Whitney Tilson sent a copy of his last email regarding Berkshire Hathaway Inc. (NYSE:BRK.A) (NYSE:BRK.B)’s sharebuy back to Warren Buffett and he sent Tilson the email below (and attachment). Buffett gave Tilson permission to share it). We have obtained a copy which we have below in text and embedded in scribd. From: Debbie Bosanek, Assistant to Warren Buffett Sent: Thursday, December 13, 2012 12:08 PM Subject: from Warren Buffett TO: Nik Deogun and Nick Dunn, CNBC Gary Kaminsky earlier today made two major errors in describing our repurchase of 9,200 Class A shares yesterday. He first stated that I had in the past advised against repurchases…