* c-exp.y (block, variable, name_not_typename, lex_one_token,

	* c-exp.y (block, variable, name_not_typename, lex_one_token,
	classify_name): Update.
	* c-valprint.c (c_val_print): Update.
	* f-exp.y (yylex): Update.
	* go-exp.y (package_name_p, classify_packaged_name)
	(classify_name): Update.
	* jv-exp.y (push_variable): Update.
	* m2-exp.y (variable): Update.
	* mi/mi-cmd-stack.c (list_args_or_locals): Update.
	* p-exp.y (block, variable, yylex): Update.
	* p-valprint.c (pascal_val_print): Update.
	* parse.c (write_dollar_variable): Update.
	* printcmd.c (address_info): Update.
	* python/py-symbol.c (gdbpy_lookup_symbol): Update.
	* symtab.c (lookup_symbol_aux, lookup_symbol_in_language)
	(lookup_symbol): Change type of 'is_a_field_of_this'.
	(check_field): Add 'is_a_field_of_this' argument.
	* symtab.h (struct field_of_this_result): New.
	(lookup_symbol, lookup_symbol_in_language): Update.