Added fsync() and fdatasync().  Patches by Scott Cotton.  Requires HAVE_* macros set by configure script.
Added fsync() and fdatasync().  Patches by Scott Cotton.  Requires
HAVE_* macros set by configure script.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator