Home construction has nudged up after two months of declines. Builders started on a seasonally adjusted 555,000 units in November, up 3.9% from October, the Commerce Department said Thursday. Even with the gain, housing starts are just 16% above the 477,000 unit pace from April 2009 -- the lowest point on records dating back to 1959. And they are down 76% from their peak in January 2006, and 45% below the 1 million annual rate that analysts say is