Japan business mood steady but outlook sours - BOJ tankan

TOKYO (Reuters) - Confidence among Japan's big firms remained unchanged from three months ago, a closely-watched central bank survey showed, but sentiment on the outlook soured for the first time in three quarters as trade frictions and global growth concerns hurt the business mood.Big companies maintained their upbeat capital expenditure plans for the current fiscal year, the Bank of Japan's "tankan" survey for the three months to December showed, an indication robust domestic demand was..