Don't include atime when determining hardlink compatibility.

Don't include atime when determining hardlink compatibility.

Don't include the atimes since we're comparing two paths stat()ed at
different times, and depending on the
platform/filesystem/mount-options, that may result in two different
atimes, even when the paths refer to the same file.

Thanks to Alexander Barton <alex@barton.de> for tracking down the
problem.

Signed-off-by: Rob Browning <rlb@defaultvalue.org>
Reviewed-by: Gabriel Filion <gabster@lelutin.ca>