@ignisf yes, but try 1.8.6!

When this script was written, 1.9.2 was not yet released, and I believe that rubinius was the only platform that provided the information (aside from the 1.9 pre-releases which were not then supported). 

Instead of `rubinius?`, which is a hack, it really ought to be `architecture_metadata_available?` so that checking word length only is used as a final fallback.

@rtreffer I agree with @ignisf  that a nested ternary operator is obfuscatory and ultimately not scalable.