Improve handling of token alignment for gnu access attribute

[pgoodman]

When using a proper gnu access attribute, we get nothing printed out after print-token-graph with the alignment. It might be that we didn't discover the attribute in Bounds.cpp. When we change it from __gnu__ to __fnu__, thus triggering the conversion to annotation attributes, we see this, which is also broken:

[pgoodman]

It also still seems like the option setting isn't quite working:

[pgoodman]

Better but not totally there: