Log Message:
Upstream changes:

1.9719	[2009-01-04]
	- As with QNX, Haiku has the API of interval timers but not
	  the implementation (bleadperl change #34630), hence skip
	  the tests, via David Mitchell.

1.9718	[2008-12-31]
	- .xs code cleanup from Albert Dvornik
	- in the #39 and #40 do not do us I did, mixing alarm() and
	  sleep().  Now instead spin until enough time has passed.

1.9717	[2008-12-30]
	- Skip the tests added in 1.9716 (#39, #40) if there's no subsecond
	  alarm capability, like with the older subsecond alarm tests

1.9716	[2008-12-26]
	- Change documentation to agree with reality: there are
	  no interval timers in Win32.
	- Address [rt.cpan.org #35899] (problem in subsecond sleeps),
          add two tests to guard against this problem
	- Address [rt.cpan.org #36600] 'Division by zero' failure in test suite
	- Address [rt.cpan.org #37340] [PATCH] Address timer process in test
	- Address [rt.cpan.org#40311 ] bad implementation of hrt_usleep
          with TIME_HIRES_NANOSLEEP