* config/m68k/tm-apollo68b.h: Remove HAVE_68881 define; it is

	* config/m68k/tm-apollo68b.h: Remove HAVE_68881 define; it is
	obsolete.

	* i387-tdep.c, i386-tdep.c i386v-nat.c, i386aix-nat.c,
	i386m3-nat.c, config/m68k/tm-m68k.h, i960-tdep.c
	config/i960/tm-i960.h, remote-nindy.c, config/m88k/tm-m88k.h,
	m88k-tdep.c: Use floatformat.h instead of ieee-float.h.
	* sparc-tdep.c: Remove now-obsolete ieee-float.h stuff
	* findvar.c: Update comment regarding ieee-float.h.