TAKE - update attributes.h with pieces for attributes and dmapi

[Dean Roehrich <roehrich@xxxxxxxxxxxxxxxxxxxxxx>]

Check in Ted's attributes.h, per his suggestion.  This adds macros and
structs that he needs for extended attributes and that I need for dmapi.

Modid:  2.4.0-test1-xfs:slinx:67398a
Date:  Mon Jul 24 08:49:48 PDT 2000
Workarea:  clink.americas.sgi.com:/data/clink/a/roehrich/2.4.0-test1-xfs2
SPRs closed:  
Severity:  Minor
Modtype:  Bugfix
Test Description:  
built and loaded with and without dmapi
Keywords:  NONE
Requested reviewer(s):  
Author:  roehrich

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.0-test1-xfs

linux/fs/xfs/pseudo-inc/sys/attributes.h - 1.5
        - update with pieces required for attributes and for dmapi