When Federal Housing Finance Agency (FHFA) director Mel Watt spoke about his plans for Fannie Mae / Federal National Mortgage Assctn Fnni Me (OTCBB:FNMA) and Freddie Mac / Federal Home Loan Mortgage Corp (OTCBB:FMCC) the Brookings Institute earlier this week, some analysts such as Rafferty Capital Market’s Richard Bove felt like the specific details were just the beginning of a much larger change in the administration’s approach to the housing markets. But in a message to investors Barclays takes a measured approach to the speech, focusing on the changes that we know are in the pipeline instead of speculating on…