Old loyalties die hard it seems. IBM made Microsoft’s fortune more than 30 years ago when it backed MS-Dos, and stuck by its partner even through the difficulties of OS/2. Now an executive says Windows Phone is the best mobile platform for the enterprise, mainly because of its integration with the huge historic base of Microsoft technologies, and Big Blue has added WP8 support to its mobile device management (MDM) platform. Jim Szafranski, SVP of customer platform services at IBM’s Fiberlink MDM unit, said in an interview that although BYOD (bring your own device) was giving iPhones, in particular, a greater presence in the enterprise, many corporations would prefer their employees to use Windows Phone devices. He was not speaking…