cargo_toml: set feature-versions for all versions
cargo_toml: set feature-versions for all versions

collect_versions() returns all the versions while
env.namespaces.main().versions() is a filtered subset.

gtk-rs/gir,GuillaumeGomez/gir,gtk-rs/gir,EPashkin/gir,EPashkin/gir,GuillaumeGomez/gir,gtk-rs/gir,GuillaumeGomez/gir