Obsolete old m68k systems.
* configure.host: Mark m68*-sun-*, m68*-sun-sunos4*,
m68*-sun-sunos3*, m68*-motorola-*, m68*-*-sysv4*, m68*-*-lynxos*,
m68*-bull*-sysv*, m68*-att-*, m680[01]0-sun-sunos4*, and
m680[01]0-sun-sunos3* as obsolete.
* configure.tgt: Mark m68*-*-lynxos*, m68*-*-sunos3*,
m68*-*-sunos4*, m68*-*-sysv4*, m68000-*-sunos3*, m68000-*-sunos4*,
m68*-bull-sysv*, m68*-att-*, and m68*-motorola-*, as obsolete.
* config/m68k/sun3os4.mh: Mark file obsolete.
* config/m68k/xm-sun3os4.h: Mark file obsolete.
* config/m68k/sun3os3.mh: Mark file obsolete.
* config/m68k/nm-sun3.h: Mark file obsolete.
* config/m68k/xm-sun3.h: Mark file obsolete.
* config/m68k/sun2os4.mh: Mark file obsolete.
* config/m68k/sun2os3.mh: Mark file obsolete.
* config/m68k/nm-sun2.h: Mark file obsolete.
* config/m68k/xm-sun2.h: Mark file obsolete.
* config/m68k/m68kv4.mh: Mark file obsolete.
* config/m68k/nm-sysv4.h: Mark file obsolete.
* config/m68k/xm-m68kv4.h: Mark file obsolete.
* config/m68k/m68klynx.mh: Mark file obsolete.
* config/m68k/nm-m68klynx.h: Mark file obsolete.
* config/m68k/dpx2.mh: Mark file obsolete.
* config/m68k/xm-dpx2.h: Mark file obsolete.
* config/m68k/nm-dpx2.h: Mark file obsolete.
* config/m68k/delta68.mh: Mark file obsolete.
* config/m68k/xm-delta68.h: Mark file obsolete.
* config/m68k/nm-delta68.h: Mark file obsolete.
* config/m68k/3b1.mh: Mark file obsolete.
* config/m68k/xm-3b1.h: Mark file obsolete.
* config/m68k/sun3os4.mt: Mark file obsolete.
* config/m68k/tm-sun3os4.h: Mark file obsolete.
* config/m68k/sun3os3.mt: Mark file obsolete.
* config/m68k/tm-sun3.h: Mark file obsolete.
* config/m68k/sun2os4.mt: Mark file obsolete.
* config/m68k/tm-sun2os4.h: Mark file obsolete.
* config/m68k/sun2os3.mt: Mark file obsolete.
* config/m68k/tm-sun2.h: Mark file obsolete.
* config/m68k/m68kv4.mt: Mark file obsolete.
* config/m68k/tm-m68kv4.h: Mark file obsolete.
* config/m68k/m68klynx.mt: Mark file obsolete.
* config/m68k/tm-m68klynx.h: Mark file obsolete.
* config/m68k/dpx2.mt: Mark file obsolete.
* config/m68k/tm-dpx2.h: Mark file obsolete.
* config/m68k/delta68.mt: Mark file obsolete.
* config/m68k/tm-delta68.h: Mark file obsolete.
* config/m68k/3b1.mt: Mark file obsolete.
* config/m68k/tm-3b1.h: Mark file obsolete.
without NAT_FILE definition, configure will assume that GDB cannot
run native.
* config/m68k/nm-delta68.h (KERNEL_U_SIZE): New macro.
* delta68-nat.c (kernel_u_size): New function.
* configure.in: Add more header files to AC_CHECK_HEADERS.
* configure: Regenerated.
* command.c: Include wait.h or sys/wait.h if present.
* inftarg.c: Ditto.
* core-aout.c: Include ptrace.h or sys/ptrace.h if present, based
on autoconf test.
* infptrace.c: Ditto.
* expprint.c: Include ctype.h for isprint prototype.
* i386aix-nat.c: Include sys/reg.h if autoconf says it is present.
* i386v-nat.c: Include ptrace.h, sys/ptrace.h, and sys/reg.h if
present, based on autoconf test.
* utils.c: Include curses.h and term.h if present.
(puts_debug): Change 'carriage_return' local variable to return_p
to avoid name clash.
* config/m68k/nm-apollo68b.h: Don't define PTRACE_IN_WRONG_PLACE,
determine it with autoconf.
* config/i386/nm-linux.h: Don't define NO_SYS_REG_H, determine it
with autoconf.
* config/i386/nm-i386sco.h: Don't define NO_PTRACE_H, determine it
with autoconf.
* config/i386/nm-i386v.h: Ditto.
* config/i386/nm-symmetry.h: Ditto.
* config/m88k/xm-cxux.h: Ditto.
* config/m88k/xm-dgux.h: Ditto.
* config/m68k/delta68.mh (NAT_FILE): nm-delta68.h no longer necessary.
* config/m68k/nm-delta68.h: Removed.
non-existent files nm-delta.h, etc.
* config/m68k/tm-delta68.h: Define CANNOT_STORE_REGISTER.
* delta68-nat.c: Add "[0]" in offsetof argument.
* delta68-nat.c (_initialize_kernel_u_addr): Don't try to set up
nl with initializer, just assign to it. Check n_scnum field on
return.