[issue13845] Use GetSystemTimeAsFileTime() to get a resolution of 100 ns on Windows

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Two articles (Microsoft and IBM) about high resolution time on Windows:
http://msdn.microsoft.com/en-us/magazine/cc163996.aspx
http://www.ibm.com/developerworks/library/i-seconds/

I installed the Windows port of the NTP daemon:
http://www.meinberg.de/english/sw/ntp.htm

Using the NTP daemon, the resolution is 1 ms instead of 15 ms (on Windows Seven). It looks like it is possible to have a resolution of 0.5 ms, but I failed to get this resolution.

Attached patch is much more simple than the previous one: it only changes _PyTime_gettimeofday().

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Added file: http://bugs.python.org/file24364/GetSystemTimeAsFileTime.patch

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