Merge pull request #425 from OpenSmalltalk/allow_newspeak_linux64_failure
Allow newspeak spur linux & macos x64 failure
Note: it is probably a Spur JIT bug on X64, rather than a newspeak specific problem
We should correct this bug, we should not have let it in, in the first place.
But in the interim, we want to continue to improve other parts and not being stuck.