swift

f96e46f7 - [CSBindings] Mark type variables that represent type parameter packs as "involving type variables"

[CSBindings] Mark type variables that represent type parameter packs as "involving type variables" Such type variables are always dependent on pack expansion type variables which should be bound first. Resolves: rdar://109381194 (cherry picked from commit 5b5b3dd6923e6eb6c4a8959db7435a333ba5f797) (cherry picked from commit ce826c2137d0dd157ba1926da5ef75c9d13e3441) (cherry picked from commit 1728cca5f069215c3ab51dc01a68ec339641aab3)