Use new NaBL and runtime in NaBL.
Add missing java strategies.
Strip annotations off the AST before generating the Stratego file, generation does not correctly handle annotations.
Use term references in 'of NS x' instead of term definitions.
Disable imports because SDF files can be imported and these would always produce errors.
Unscope namespaces and properties and make them non-unique because imports are disabled.
Reference clauses scope their variable definitions (introduces by where clauses).
Merge branch 'new-nabl-bootstrap'