New Cog VMs available

> who want to play with it.  The 64-bit image is in mirandabanda.org/files/Cog/SpurImages.
>
> CogVM binaries as per VMMaker.oscog-eem.1388/r3390
> Newspeak:
> Enforce Newspeak access control in the interpreter, and enable it in Stack VMs.
> Add a separate global lookup cache for non-ordinary sends.
> Do proper lookups for self and super send misses from cogged code.
> Do proper lookups for implicit receiver and outer send misses from cogged code.
> Distinguish lookup for ordinary sends and for MNU processing in the JIT.
> Skip private methods and stop on protected methods in ordinary lookup.
> This should complete Newspeak access control.
>
> Spur:
> Add explicit read barriers to primitives which access an argument as the
> receiver (i.e. the mirror primitives).  Don't check if the actual receiver is
> used.  Simplify failure where appropriate because primitives will be retried.
> Fix bogus assert in extSendBytecode.  Simplify
> SpurMemoryManager>>classForClassTag:; its assert is superfluous.
>
> ARM Cogit:
> Add hardware FP support for ARM.
> Runs all SUnit tests and assorted benchmarks ok, makes nbody 3X faster.
> Probably some cleaning up to do, possibly more careful NaN handling etc.
>
> Fix PIC parsing for out-of-line literals.  Add an assert to the closed PIC
> prototype code to check all PIC parameters are accessible.  Add a
> containsAddress: to abstract away the test for a target within the PIC.

>
> Note that there's also a 64-bit Spur linux stack VM available for people (Hi Tobias!) who want to play with it.  The 64-bit image is in mirandabanda.org/files/Cog/SpurImages.
>
> CogVM binaries as per VMMaker.oscog-eem.1388/r3390
> Newspeak:
> Enforce Newspeak access control in the interpreter, and enable it in Stack VMs.
> Add a separate global lookup cache for non-ordinary sends.
> Do proper lookups for self and super send misses from cogged code.
> Do proper lookups for implicit receiver and outer send misses from cogged code.
> Distinguish lookup for ordinary sends and for MNU processing in the JIT.
> Skip private methods and stop on protected methods in ordinary lookup.
> This should complete Newspeak access control.
>
> Spur:
> Add explicit read barriers to primitives which access an argument as the
> receiver (i.e. the mirror primitives).  Don't check if the actual receiver is
> used.  Simplify failure where appropriate because primitives will be retried.
> Fix bogus assert in extSendBytecode.  Simplify
> SpurMemoryManager>>classForClassTag:; its assert is superfluous.
>
> ARM Cogit:
> Add hardware FP support for ARM.
> Runs all SUnit tests and assorted benchmarks ok, makes nbody 3X faster.
> Probably some cleaning up to do, possibly more careful NaN handling etc.
>
> Fix PIC parsing for out-of-line literals.  Add an assert to the closed PIC
> prototype code to check all PIC parameters are accessible.  Add a
> containsAddress: to abstract away the test for a target within the PIC.