You had to see this coming (and it was rumored, too), with the popularity of low-cost ultra-portable laptops such as the Asus Eee PC, the OLPC, and the Classmate. Microsoft has given Windows XP another reprieve, but only for a class of devices they call ULCPCs or Ultra-Low-Cost PCs.Microsoft said on Thursday that it will continue to allow Windows XP Home edition to be sold for a class of computers it calls “ultra-low-cost PCs.” It’s a category that covers machines with slower processors, smaller screens, and