cmd: relocate cmd/go/internal/robustio to cmd/internal/robustio

Relocate cmd/go's internal/robustio package up a level into
cmd/internal/robustio, so that it can be used by other cmd/internal
packages. No change in functionality. This change is intended to be in
support of making the cmd/go script test framework available to other
commands in addition to just the Go command.

Updates #68606.

Change-Id: Ic8421ef59d9b7d79a50c3679d180cfa2546c4cd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/601356
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Matloob <matloob@golang.org>

src/cmd/go/go_test.go

@@ -34,13 +34,13 @@ import (
 	"cmd/go/internal/cache"
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/gover"
-	"cmd/go/internal/robustio"
 	"cmd/go/internal/search"
 	"cmd/go/internal/toolchain"
 	"cmd/go/internal/vcs"
 	"cmd/go/internal/vcweb/vcstest"
 	"cmd/go/internal/web"
 	"cmd/go/internal/work"
+	"cmd/internal/robustio"
 	"cmd/internal/sys"
 
 	cmdgo "cmd/go"

src/cmd/go/go_windows_test.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"testing"
 
-	"cmd/go/internal/robustio"
+	"cmd/internal/robustio"
 )
 
 func TestAbsolutePath(t *testing.T) {

src/cmd/go/internal/modfetch/cache.go

@@ -24,8 +24,8 @@ import (
 	"cmd/go/internal/gover"
 	"cmd/go/internal/lockedfile"
 	"cmd/go/internal/modfetch/codehost"
-	"cmd/go/internal/robustio"
 	"cmd/internal/par"
+	"cmd/internal/robustio"
 	"cmd/internal/telemetry/counter"
 
 	"golang.org/x/mod/module"

src/cmd/go/internal/modfetch/fetch.go

@@ -25,10 +25,10 @@ import (
 	"cmd/go/internal/fsys"
 	"cmd/go/internal/gover"
 	"cmd/go/internal/lockedfile"
-	"cmd/go/internal/robustio"
 	"cmd/go/internal/str"
 	"cmd/go/internal/trace"
 	"cmd/internal/par"
+	"cmd/internal/robustio"
 
 	"golang.org/x/mod/module"
 	"golang.org/x/mod/sumdb/dirhash"

src/cmd/go/internal/script/cmds.go

@@ -6,7 +6,7 @@ package script
 
 import (
 	"cmd/go/internal/cfg"
-	"cmd/go/internal/robustio"
+	"cmd/internal/robustio"
 	"errors"
 	"fmt"
 	"internal/diff"

src/cmd/go/internal/work/action.go

@@ -26,10 +26,10 @@ import (
 	"cmd/go/internal/cache"
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/load"
-	"cmd/go/internal/robustio"
 	"cmd/go/internal/str"
 	"cmd/go/internal/trace"
 	"cmd/internal/buildid"
+	"cmd/internal/robustio"
 )
 
 // A Builder holds global state about a build.
@@ -560,9 +560,9 @@ func (b *Builder) CompileAction(mode, depMode BuildMode, p *load.Package) *Actio
 		if p.Internal.PGOProfile != "" {
 			pgoAction := b.cacheAction("preprocess PGO profile "+p.Internal.PGOProfile, nil, func() *Action {
 				a := &Action{
-					Mode:    "preprocess PGO profile",
-					Actor:   &pgoActor{input: p.Internal.PGOProfile},
-					Objdir:  b.NewObjdir(),
+					Mode:   "preprocess PGO profile",
+					Actor:  &pgoActor{input: p.Internal.PGOProfile},
+					Objdir: b.NewObjdir(),
 				}
 				a.Target = filepath.Join(a.Objdir, "pgo.preprofile")