[Lazarus] Graphics changes (r15472)

[Luiz Americo Pereira Camara]

Luiz Americo Pereira Camara wrote:
> Marc Weustink wrote:
>   
>> This is no error, this is by design. And is only kept once and as long 
>> as the image isn't changed. Indeed, for cases where you know you never 
>> want to save it, we can add an property.
>>     
>
> Since the most common case is not save it, just display, the default 
> should be not keep a copy of the stream. This my point.
>