[patch] enhancement for "test -nt" to support nanosecond timestamps where available

[James Youngman]

The attcached patch enhances "test" and "[" to take account of the
nanoseconds part of the mtime when evaluating "test A -nt B" and "test
A -ot B".

Regards,
James.

2005-07-17  James Youngman  <address@hidden>

        * src/test.c (age_of): Return the nanoseconds part of the
        timestamp if this is available.
        * configure.ac: Determine if 'struct stat' has a member st_mtim
          which contains the nanoseconds part of the mtime.

coreutils.test-ns.patch
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