TAKE - fix mount noatime

[Steve Lord <lord@xxxxxxx>]

There was no way to get noatime into xfs prior to this, there were
some readonly combinations which got rejected by the parser too.

Date:  Tue May 15 19:47:50 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:95038a
linux/fs/xfs/linux/xfs_super.c - 1.122
        - Pay attention to mount options already parsed by the vfs layer, 
noatime
          and readonly are the ones affected here.