NEW YORK, Nov 29 (Reuters) - U.S. stocks gained on Tuesday after stronger-than-expected consumer confidence data lifted hopes about holiday spending, while a rise in orders for the largest manufactured goods boosted industrial stocks, including aircraft maker Boeing Inc. (BA.N: Quote, Profile, Research) Also, the Standard & Poor's index of steel makers was up 4.6 percent, and shares in U.S. Steel Corp. (X.N: Quote, Profile, Research) rose 7.9 percent to $45.83 on the New York Stock Exchange after J.P. Morgan placed the steel maker's stock on its focus list, saying it was undervalued. [ID:nN29193412] Boeing shares gained 1.4 percent to...