CNBC's Jim Cramer on Friday guided investors through next week's most important happenings on Wall Street, including earnings reports from homebuilders Lennar and KB Home, adding that the housing sector can be the "linchpin" of the economy."Last night, I bemoaned that there aren't enough stocks that are compelling away from tech," Cramer said. "Let's see what happens next week, and whether we get enough data that's weak, but not too weak, because it's very hard to imagine the Fed cutting rates until the fal ...