[RFA] Remove KERNEL_U_ADDR from config/nm-nbsd.h

[Jason R Thorpe <thorpej@wasabisystems.com>]

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The following patch removes the definition of KERNEL_U_ADDR from
the NetBSD native configs.

The reason for doing so: the definition is completely bogus.  NetBSD
has not used the U-area for process or core file debugging for many
many years, and the U-area isn't even double-mapped at a fixed address
anymore (i.e. there is no "u.").

In addition, pulling in <machine/vmparam.h> (for the USRSTACK definition)
on some targets causes a compilation error, since this file is not meant
to be included directly (or by userland at all!).

	* config/nm-nbsd.h (KERNEL_U_ADDR): Remove.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>

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Index: config/nm-nbsd.h
===================================================================
RCS file: /cvs/src/src/gdb/config/nm-nbsd.h,v
retrieving revision 1.1.1.3
diff -c -r1.1.1.3 nm-nbsd.h
*** nm-nbsd.h	1999/12/14 01:05:40	1.1.1.3
--- nm-nbsd.h	2002/01/18 17:49:25
***************
*** 18,30 ****
     Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.  */
  
- /* This is the amount to subtract from u.u_ar0
-    to get the offset in the core file of the register values.  */
- 
- #include <machine/vmparam.h>
- 
- #define KERNEL_U_ADDR USRSTACK
- 
  #define PTRACE_ARG3_TYPE char*
  
  #define FETCH_INFERIOR_REGISTERS
--- 18,23 ----