040000 tree 5d2b270650701898c8106d798ecce237536007eb	bsd
040000 tree f44b946e26c9201385e11999eb53d995a2492386	linux
040000 tree 954e1812919a01d5f4f7bf669ba4c8b05cfb81ac	mingw32
040000 tree 37174ec20b736ed10aafb2a9b6eab8521c658c5d	posix
040000 tree 5277f6516b5aa16a8f4d9eeb240cc1477fcb34fa	posix95