winmm: Increase tolerance range in tests

[Alistair Leslie-Hughes]

Robert Reif wrote:
> Please give an explanation why?  If it's just to make the test pass, 
> then we need to know why the test is failing. 
> 
> Is it only needed for wine?  Could be a wine problem.
> 
> Is it only needed for specific versions of Windows or specific hardware 
> or drivers?
> 
> Is it only needed for Windows running on a virtual machine?  Then it 
> could be a a virtual machine hardware emulation problem.
> 
> I think all Windows hardware test failures that only happen on virtual 
> machines should be considered suspect.  It would be nice to detect if 
> Windows is running on real hardware or a virtual machine because of this 
> type of problem.
> 
Hi Robert,
   It was mainly to get test to pass.

Its appears from the testing data that XP, 2k3, vista, 2k8 all have
issues with the tolerance values.


Best Regards
  Alistair Leslie-Hughes