Bank for International Settlements sees global trouble brewing   Several major factors are converging and posing a threat to the global economy, the Bank for International Settlements said in a report.  China’s slowdown is hurting emerging markets dependent on commodity exports, the bank said, even as the rising value of the U.S. dollar adds stress in markets where much debt is dollar-denominated.  Brian Blackstone, Wall Street Journal, reports on this issue.  To find out more on this Dow Jones Business News article, click: BIS Highlights Trouble Spot for Global Economy.