[issue14127] add st_*time_ns fileds to os.stat(), add ns keyword to os.*utime*(), os.*utimens*() expects a number of nanoseconds

[Larry Hastings]

Larry Hastings <larry at hastings.org> added the comment:

Guido suggested I break the work up into small patches.  So here's the first patch: adds st_?time_ns fields to os.stat() result.  Includes doc changes and a reasonable smoke-test in the regrtest suite; suite passes all expected tests.  FYI I wasn't sure what to call the currently-slightly-uncomfortably-named new function _PyTime_LongFromTime_t().

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Added file: http://bugs.python.org/file24838/larry.st_mtime_ns.patch.1.txt

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