* config/i386/tm-i386aix.h, config/i386/tm-sun386.h,

	* config/i386/tm-i386aix.h, config/i386/tm-sun386.h,
	config/i386/tm-symmetry.h (REGISTER_CONVERT_TO_RAW):  Fix typo.
	* config/i386/tm-symmetry.h:  Make comment inside #if 0 a real
	comment.
	* config/i386/tm-symmetry.h (STORE_STRUCT_RETURN):  Cast argument
	to write_memory to avoid warnings from gcc.
	* config/i386/xm-symmetry.h:  Add missing #endif.
	* config/i386/nm-symmetry.h (NO_PTRACE_H):  Add for Dynix.
	* config/i386/symmetry.mt (TDEPFILES):  Add i386-tdep.o.
	* config/i386/symmetry.mh (NAT_FILE, NATDEPFILES):  Add.