New Cog VMs available

> at http://www.mirandabanda.org/files/Cog/VM/VM.r3332/.
>
> CogVM binaries as per VMMaker.oscog-eem.1298/r3332
>
> NewspeakVM:
> Thread lookup rule through from bytecodes to internalFindNewMethod:.
>
> Fix genInnerPrimitiveMirrorNewWithArg:.  Class's hash was being accessed twice,
> reusing variable holding jump instruction.
>
> Fix primitiveClass and genPrimitiveClass for mirror case (arg count = 1). Also
> fix Newspeak primitive table to allow nargs > 0 for genPrimitiveClass.
>
> General:
> Fix a regression in externalInstVar:ofContext:.  The head frame pointers must
> be written back if we're going to map a machince code pc to a bytecode pc in
> case of code reclamation.  Add asserts to the stack page enumerators to check
> that the head frame pointers have been written back.
>
> Fix changeClass: for forwwarded receivers.
>
> Use macros for the oop comparisons, avoiding cCoerce:, to get faster simulation
> and avoid the inliner not inlining in conditionals.
>
> Spur:
> Change computeRefCountToShrinkRT to
> - compute the ref counts and population in a single pass over the RT
> - determine the ref count for tenuring based on half the population of
>   remembered objects, /not/ half the size of the RT.