July 7 (Bloomberg) — Barton Crockett, analyst at Lazard Capital Markets, talks about the potential impact of a phone-hacking scandal on Rupert Murdoch’s News Corp. and the company's planned takeover of British Sky Broadcasting Group Plc.   News International, News Corp.\u2019s U.K. unit, said late yesterday it will investigate allegations the News of the World tabloid hacked the phones of relatives of dead soldiers, after previous reports that the voicemail of murder and terror victims was intercepted.…