BlackBerry inks security software deals; shares slip

By Malathi Nayak and Alastair Sharp NEW YORK/TORONTO (Reuters) - BlackBerry Ltd said on Tuesday it had signed a five-year, multimillion-dollar deal to run emergency notifications for the U.S. Senate, among a handful of small deals the company unveiled as it shifts its focus to software from smartphones. The Canadian company also said that AtHoc, a crisis communications firm it bought last year, had expanded a deal with the U.S. Coast Guard to cover staff in Washington, D.C. BlackBerry did not pr