[rfc][icedtea-web] Fix wrongly placed object construction helpers in IcedTeaScriptablePluginObject

[Adam Domurad]

On 06/05/2013 10:34 AM, Adam Domurad wrote:
> Whoever wrote these static helpers switched up which class they are 
> associated with -- it took me a while of being confused to notice it, 
> too. This patch places the object creation helper methods in the right 
> class.
> I added some more type safety too to prevent future confusion.
>
> No changelog yet, I'll wait for an ack on the patch first.
>
> Cheers,
> -Adam

Here is additional refactoring on top of this patch and the 
'[rfc][icedtea-web] More testing for IcedTeaScriptablePluginObject.cc + 
memory leak fixes' fix patch. This stuff is necessary cleanup in my 
opinion; this code has been neglected.

Again changelog waiting for ack, I recommend using a tool like eg meld 
to look at the differences here. They are all safe and minor IMO.
The reason for touching this code is to try to make the 'getvalue' npapi 
call non-blocking, so it will never hang firefox.

Cheers,
-Adam