Conocophillips CEO Ryan Lance speaks during an interview with Maria Bartiromo, for her Fox Business Network show "Opening Bell with Maria Bartiromo" in New York(Reuters) – ConocoPhillips , the largest U.S. independent oil and gas company, reported a quarterly loss compared with a year-ago profit on Thursday as steep declines in crude oil prices hurt results. The Houston-based company also said it was lowering its forecast for 2015 capital expenditures to $11 billion from $11.5 billion. Conoco’s loss in the second quarter was $179 million, or 15 cents per share, compared with a profit of $2.1 billion, or $1.67 per share in the same quarter a year earlier. Second-quarter output from continuing operations, excluding Libya, was 1. …