TAKE - merge in suggestion from Andi Kleen

[Steve Lord <lord@xxxxxxx>]

Cross architecture compilation fix

Modid:  2.3.99pre2-xfs:slinx:62991a
Date:  Tue May 30 09:22:07 PDT 2000
Workarea:  jen.cray.com:/data/clink/io/lord/slinx

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.3.99pre2-xfs

linux/fs/xfs/xfs_bmap_btree.h - 1.48
http://oss.sgi.com/cgi-bin/cvsweb.cgi/linux-2.4-xfs/linux/fs/xfs/xfs_bmap_btree.h.diff?r1=text&tr1=1.48&r2=text&tr2=1.47&f=h
linux/fs/xfs/xfs_os_defs.h - 1.8
http://oss.sgi.com/cgi-bin/cvsweb.cgi/linux-2.4-xfs/linux/fs/xfs/xfs_os_defs.h.diff?r1=text&tr1=1.8&r2=text&tr2=1.7&f=h
        - Remove unneeded endian.h include

linux/fs/xfs/xfs_arch.h - 1.27
http://oss.sgi.com/cgi-bin/cvsweb.cgi/linux-2.4-xfs/linux/fs/xfs/xfs_arch.h.diff?r1=text&tr1=1.27&r2=text&tr2=1.26&f=h
        - For the kernel build, use kernel header files to work out architecture