By Dan Weil Personal-consumption expenditures edged up only 0.2% in May from April and fell 0.4% in real (inflation-adjusted) terms. Consumer spending is the most important part of the economy, accounting for more than two-thirds of GDP. The numbers for May weren’t too encouraging. Personal-consumption expenditures rose only 0.2% in that month from April and fell 0.4% in real (inflation-adjusted) terms. Retail sales, including restaurants and not adjusted for inflation, slid 0.3% in May. “The drop in real personal spending in May — coupled with downward revisions to the data from January to A…