Nikkei choppy on govt tax hike, Fed concerns; real estate shares up

* PM Abe's team meets for 1st time on consumption tax discussion * Real estate, construction shares up on Olympics hopes * Trading subdued on Fed tapering concern By Ayai Tomisawa TOKYO, Aug 26 (Reuters) - Japan's Nikkei share average was flat in choppy trade on Monday morning as concerns about whether the government will raise the consumption tax as planned kept most investors sidelined, while real estate stocks and construction shares gained. The Nikkei was flat in mid-mor