MINYANVILLE ORIGINAL Stocks stayed little changed in mid-Friday trading as robust Chinese manufacturing and US industrial production data were balanced by continued worries about fiscal cliff negotiations.   Manufacturing growth in China hit a 14-month high of 50.9 according to the HSBC December flash purchasing managers’ index. Meanwhile the Federal Reserve said that industrial production rose 1.1% in November surpassing the consensus estimate of a gain of 0.3%. The Dow Jones Industrial Average (INDEXDJX:.DJI) was down 0.09% to 13 158.63 points as of 12:08 p.m. EST. Alcoa (NYSE:AA) was up a strong 1.55% to $8.72. The company announced earlier ...