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.
* utils.c: <readline/readline.h> instead of "readline/readline.h".
* configure.in (TERM_LIB): Search for the appropriate term library
on the host system.
* configure: Regenerated.
* Makefile.in (TERMCAP): Set based on autoconf check.
* config/*/*.mh: Don't override TERMCAP setting.
config/m68k/m68kv4.mh, config/mips/{irix4.mh, irix5.mh,
mipsv4.mh}, config/sparc/sun4so2.mh (INSTALL): Removed, figured
out by autoconf.
* config/apollo68v.mh (RANLIB): Removed, figured out by autoconf.
* Makefile.in, configure.in: Converted to use autoconf
* aclocal.m4: New file, local autoconf macro definitions.
* configure: New file, generated with autoconf 2.3.