bootstrap:passfwd: define_builtin: handle generic intf instance member
bootstrap:passfwd: define_builtin: handle generic intf instance member

When define_builtin() is used with a prototype that comes from an
instantiated generic intf (and not just a non-generic intf), it copies
the proto from the instance and replaces all IDENT that are lexically
scoped within the instance (in addition to THIS and FINAL we already
handled).

nanocritical/n,nanocritical/n,nanocritical/n,nanocritical/n