TAKE - fix timestamps for nfs

[Steve Lord <lord@xxxxxxx>]

XFS inode timestamps were getting lost on nfs exported filesystems,
this is because nfs assumes the inode fields are gospel and does
not pay attention to the revalidate method.

Date:  Tue Apr 10 07:03:50 PDT 2001
Workarea:  jen.americas.sgi.com:/src/lord/xfs-linux.2.4

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs


Modid:  2.4.x-xfs:slinx:92092a
linux/fs/xfs/xfs_inode.c - 1.313
        - Always update linux inode timestamps when updating xfs internal
          timestamps, this is needed for nfs server support.