Release 2017.2 Various new syscall wrapper APIs, O_TMPFILE support, copy_file_range(). Mostly getting this out there so we have a regular release stream. Git-EVTag-v0-SHA512: 2281009b28f32de975cea70d00473279b0adc88bfa4494014af866192ccea66d6168f63ac389b427ed82f583c4105c4e79bbca3ccb05a5f8adf03b6a362a205b