get_array
Description:
This is useful in language bindings where unknown Value types are not supported.
 This function will convert the gst_type_array into a newly allocated 
      ValueArray and return it through array. Be aware that this is slower 
      then getting the Value directly.
Parameters:
| this | |
| fieldname | the name of a field | 
| array | a pointer to a ValueArray | 
Returns:
| true if the value could be set correctly. If there was no field with  |