release/15.x commit 134fd359a5d884f16662a9edd22ab24feeb1498c
upstream commit 1931d3cb20a00da732c5210b123656632982fde0
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging