Men walk past an electronic board displaying market indices from around the world outside a brokerage in Tokyo. Credit: Reuters/Toru Hanai By Chikako Mogi TOKYO | Mon Apr 30, 2012 10:35pm EDT TOKYO (Reuters) - Asian shares inched up on Tuesday as Chinese factory data lent support to Australian stocks, but concerns about the U.S. economy and the euro zone capped prices. MSCI's broadest index of Asia-Pacific shares outside Japan .MIAPJ0000PUS rose 0.2 percent, after posting just a 0.4 percent gain in April. Japan's Nikkei stock average .N225 extended losses from Friday to fall 1.1 percent as a stronger yen hurt exporters. The market was closed on Monday for a public holiday. .T Australian shares .AXJO extended gains to a rise on the day of 0.5 percent after data showing China's official purchasing managers' index (PMI) rose to a 13-month high of 53.3 in April. The market had been up 0.2 percent before the data...