> If STEP is part of GNU Smalltalk, and licensed under GNU licenses, then it's
> not suitable for Squeak core, unless it's also dual licensed with a compatible
> license as well.

No, it's just hosted in the same way Squeak's Mantis installation was 
used to host Seaside's issue tracking.

The reference implementations for STEP are meant to be under any 
OSI-approved license, though it is "suggested" that it be GPL-compatible.

Paolo