[PATCH 1/3] ntdll: Implement nanosecond precision file time storage (try 2).

[Erich E. Hoover]

This series of patches provides a fix for Bug #31858 (Netflix Internet
Connection Problem).  With this particular patch the POSIX.1-2008
futimens() function is used to replace the BSD futimes() function,
allowing for nanosecond precision of recorded file times.  This is
important for PlayReady/Netflix since PlayReady will re-copy the
individualization file from .../Cache/indiv01.key to
.../Cache/S-1-5-21-0-0-0-1000/MSPRindiv01.key if the file time doesn't
match (resulting in an access error since the file is in use). Without
the patch saving and restoring file times is not a perfectly
reversible process (since file times are stored in microseconds and
retrieved in nanoseconds), meaning that a CopyFile operation will
result in a different file time for the copied file.  This version has
been updated to use a configure check so that futimens() is only used
if it is supported by the host system.
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