Fixes PR java/9685, PR java/15073

Fixes PR java/9685, PR java/15073

	Fixes PR java/9685, PR java/15073
	* parse.y (accessibility_string): New method.
	(not_accessible_field_error): Use accessibility_string()
	instead of java_accstring_lookup().
	(resolve_qualified_expression_name): Check with
	check_pkg_class_access() before allowing access using
	qualified names.
	Fix comment typo.
	Use check_pkg_class_access() instead of not_accessible_p()
	for unqualified types.
	(not_accessible_p): Use DECL_CONTEXT (member) instead of
	REFERENCE for package-private access checking.
	(patch_method_invocation): Use accessibility_string() instead
	of java_accstring_lookup().

From-SVN: r81573