gas symbol struct field renaming

Get rid of sy_ prefix, and some unused fields.

	* symbols.c (struct symbol_flags): Rename sy_volatile to volatil,
	and remove sy_ from other field names.  Update throughout.
	(struct symbol): Remove sy_ from field names.  Delete unused
	TARGET_SYMBOL_FIELDS.  Update throughout file.  Move after..
	(struct local_symbol): ..here.  Remove lsy_ from field names.
	Delete unused TC_LOCAL_SYMFIELD_TYPE.  Update throughout file.
	(local_symbol_resolved_p, local_symbol_mark_resolved): Delete.
	Expand uses throughout file.
	(local_symbol_get_frag, local_symbol_set_frag): Likewise.
	(symbol_new): Move symbol_table_frozen test to..
	(symbol_append): ..here, and..
	(symbol_insert): ..here.
	(resolve_symbol_value, symbol_relc_make_expr): White space fixes.
	(HANDLE_XADD_OPT1, HANDLE_XADD_OPT2): Likewise.
	* config/obj-coff.h (RESOLVE_SYMBOL_REDEFINITION): Update.