Bug#642750: [PATCH] epiphany-browser: *HIGHLY* unstable on ia64, (IA-64/IPF/Itanium) platform

[peter green]

>
> The proposed patch defines a third option
> USE(JSVALUE64W)
> which we use *only* on ia64.
> It uses an encapsulated union without any trick for the variant data  
> type. This is portable but
> - the data type is 128-bits wide,
> - Enabling JIT compiler isn't possible - that's not that bad; ia64  
> doesn't have a JIT compiler.
>   
Is the type in question purely internal to webkit or is it also used by 
client applications? If the latter then presumablly a soname bump and 
hence a transition would be needed.