* configure.in: Don't set files and links. Don't call
AC_LINK_FILES. Substitute te_file. Create targ-cpu.h,
obj-format.h, targ-env.h, and itbl-cpu.h in AC_OUTPUT.
* configure: Rebuild.
* Makefile.in (TARG_CPU_C): New variable.
(TARG_CPU_O, TARG_CPU_H): New variables.
(OBJ_FORMAT_C, OBJ_FORMAT_O, OBJ_FORMAT_H): New variables.
(TARG_ENV_H, ATOF_TARG_C, ATOF_TARG_O): New variables.
(SOURCES): Rename from REAL_SOURCES. Delete old definition.
(LINKED_SOURCES): Remove.
(HEADERS): Rename from REAL_HEADERS. Delete old definition.
(LINKED_HEADERS): Remove.
(OBJS): Use $(TARG_CPU_O), etc., rather than targ-cpu.o, etc.
($(OBJS)): Depend upon $(TARG_ENV_H), etc., rather than
targ-cpu.h, etc.
($(TARG_CPU_O), $(OBJ_FORMAT_O) $(ATOF_TARG_O)): New targets.
(targ-cpu.o, obj-format.o, atof-targ.o): Remove targets.
(itbl-cpu.h): Remove target.
(DISTCLEAN_HERE): Remove targ-cpu.c, obj-format.c, atof-targ.c,
atof-targ.h.