Log Message:
Updated p5-Time-HiRes to 1.9746.

1.9746 [2017-08-17]
 - Unreliable t/usleep.t and t/utime.t tests [rt.cpan.org #122819]
   Avoid testing for $dt = $t2 - $t1 and assuming $dt is less than
   some value since a heavily loaded machine can delay the $t2.
   Testing for greater than is fine.
 - Tweak the configuring messages about subsecond stat/utime.

1.9745 [2017-08-14]
  - Properly check for futimens/utimensat actually doing something.
    This should handle 'gnukfreebsd' (which has only stubs, so far
    we have been skipping the test) and as a new thing 'gnu' (Hurd)
    (also only stubs).  Thanks to Nigel Horne.
  - Scan in t/utime.t whether the filesystem (wherever File::Temp
    puts it tempfiles) supports subsecond timestamps.  This removes
    the fragile Linux/ext3 specific hack.  As a side effect, the
    setting of subsecond timestamps is tested only if reading of
    them is supported.  Thanks to Carsten Gaebler for the test idea,
    and Ryan Voots for testing.