clean-up of obsolete code
renamed [Native(accessor)] to simply [Accessor] and made it support
non-native get / set accessors, too. You can annotate any ActionScript
get or set property accessor with [Accessor] to convert it into a normal
method at runtime, which makes it IE8-compatible.
The name of the accessor method is derived from the property name
by using "get" / "set" prefix with the first-letter-uppercase version of
the property name ("getX" / "setX"). To force anything else, use the
desired name as [Accessor] annotation parameter, like so:
public class Image {
[Accessor("getURL")]
public function get url():String { ... }
}

Note that Jangaroo still only detects few types of usages of such
an accessor, namely mainly when the property is accessed directly
on a typed variable. Thus,
  var image:Image = new Image();
  var url:String = image.url;
will be translated to
  var image:Image = new Image();
  var url = image.getURL();
but even
  var url:String = new Image().url;
will not be detected and stay
  var url = new Image().url;