Problem generating cog v3 related to primitiveVMParameter

> Hi,
> I currently get link failure when compiling squeak.cog.v3 for my own VM brand.
>
> The unresolved symbols are related to Spur (like numSegments).
>
> It seems that the CCodeGenerator correctly eliminated the tests like
>     objectMemory hasSpurMemoryManagerAPI ifTrue: [...]
>
> But failed to eliminate this one:
>         (arg = 53
>          and: [objectMemory hasSpurMemoryManagerAPI]) ifTrue:
>             [result := objectMemory integerObjectOf: objectMemory numSegments].
>
> which is generated as:
>         if ((arg == 53)
>          && (0)) {
>             result = (((numSegments()) << 1) | 1);
>         }
>
> So we should either rewrite primitiveVMParameter test like this:
>     objectMemory hasSpurMemoryManagerAPI ifTrue: [arg = 53 ifTrue: [...]]
>
> or patch the generator again with more complex pattern analysis...