TAKE - remove yet more kernel intrusions

[Steve Lord <lord@sgi.com>]

It turns out we now have a way around the BH_End_io flag, and can run
without it, we can also use fewer special purpose end_io functions and
more of the generic cases.

Date:  Mon Apr  2 13:56:41 PDT 2001
Workarea:  jen.americas.sgi.com:/src/lord/xfs-base

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


Modid:  2.4.x-xfs:slinx:91406a
linux/include/linux/fs.h - 1.87
	- Remove BH_End_io flag.

linux/drivers/block/ll_rw_blk.c - 1.65
	- Remove BH_End_io check from ll_rw_block, we do not need it anymore.

linux/kdb/modules/kdbm_pg.c - 1.32
	- Fixup buffer head flag printing code.

linux/fs/pagebuf/page_buf.c - 1.69
	- Cleanup buffer flag setting

linux/fs/pagebuf/page_buf_io.c - 1.71
	- Cleanup end_io handling for buffer heads, we no longer need as many
	  special purpose handlers, or the BH_end_io flag.

linux/drivers/md/raid5.c - 1.12
	- Remove BH_End_io checks - the flag is gone