File Release Notes and Changelog

This is preliminary alpha release, some API may change.

* First release, implemented bindings :
  * fsync fdatasync
  * eventfd signalfd
  * statvfs fstatvfs
  * dirfd openat unlinkat fstatat
  * uname
  * fadvise fallocate
  * ttyname setpgid getpgid setreuid setregid
  * realpath