[dev.typeparams] cmd/compile/internal/types2: review of package.go

[dev.typeparams] cmd/compile/internal/types2: review of package.go

f=package.go; diff $f ../../../../go/types/$f
5c5
< package types2
---
> package types
8a9
> 	"go/token"
25c26
< 	scope := NewScope(Universe, nopos, nopos, fmt.Sprintf("package %q", path))
---
> 	scope := NewScope(Universe, token.NoPos, token.NoPos, fmt.Sprintf("package %q", path))

Change-Id: I3a34b39e337c2d0224445e5dc5fbd4a6a53f0363
Reviewed-on: https://go-review.googlesource.com/c/go/+/265677
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>