* read from plain log * reduce memory copies * cleanup * fix test_replay old-commit-hash: 91eb096ac98b46605c283c637ed1e6b15598dc52
* mv to tools/replay * change folder * add .gitignore * fix build doc * disable warning * enable warning after build * build qt/util.cc qt/api.cc to library * cleanup old-commit-hash: fd5b3d76036b78864111790931a3abcb1d11ee0f