cmd: relocate cmd/go/internal/script to cmd/internal/script

Relocate cmd/go's internal/script package up a level into
cmd/internal/script, so as to enable the use of script tests in
other cmd packages.  No change in functionality.

Updates #68606.

Change-Id: I3974b0bf59c76e0f459184c9f3090d6077dd5d91
Reviewed-on: https://go-review.googlesource.com/c/go/+/601358
Reviewed-by: Michael Matloob <matloob@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

src/cmd/go/internal/vcweb/script.go

@@ -7,7 +7,7 @@ package vcweb
 import (
 	"bufio"
 	"bytes"
-	"cmd/go/internal/script"
+	"cmd/internal/script"
 	"context"
 	"errors"
 	"fmt"

src/cmd/go/internal/vcweb/vcweb.go

@@ -31,7 +31,7 @@ package vcweb
 
 import (
 	"bufio"
-	"cmd/go/internal/script"
+	"cmd/internal/script"
 	"context"
 	"crypto/sha256"
 	"errors"

src/cmd/go/script_test.go

@@ -27,9 +27,9 @@ import (
 
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/gover"
-	"cmd/go/internal/script"
-	"cmd/go/internal/script/scripttest"
 	"cmd/go/internal/vcweb/vcstest"
+	"cmd/internal/script"
+	"cmd/internal/script/scripttest"
 
 	"golang.org/x/telemetry/counter/countertest"
 )

src/cmd/go/scriptcmds_test.go

@@ -5,9 +5,9 @@
 package main_test
 
 import (
-	"cmd/go/internal/script"
-	"cmd/go/internal/script/scripttest"
 	"cmd/go/internal/work"
+	"cmd/internal/script"
+	"cmd/internal/script/scripttest"
 	"errors"
 	"fmt"
 	"os"

src/cmd/go/scriptconds_test.go

@@ -6,8 +6,8 @@ package main_test
 
 import (
 	"cmd/go/internal/cfg"
-	"cmd/go/internal/script"
-	"cmd/go/internal/script/scripttest"
+	"cmd/internal/script"
+	"cmd/internal/script/scripttest"
 	"errors"
 	"fmt"
 	"internal/buildcfg"

src/cmd/go/scriptreadme_test.go

@@ -6,7 +6,7 @@ package main_test
 
 import (
 	"bytes"
-	"cmd/go/internal/script"
+	"cmd/internal/script"
 	"flag"
 	"internal/diff"
 	"internal/testenv"
@@ -38,7 +38,7 @@ func checkScriptReadme(t *testing.T, engine *script.Engine, env []string) {
 	args.Conditions = conds.String()
 
 	doc := new(strings.Builder)
-	cmd := testenv.Command(t, testGo, "doc", "cmd/go/internal/script")
+	cmd := testenv.Command(t, testGo, "doc", "cmd/internal/script")
 	cmd.Env = env
 	cmd.Stdout = doc
 	if err := cmd.Run(); err != nil {

src/cmd/internal/script/scripttest/scripttest.go

@@ -7,8 +7,8 @@ package scripttest
 
 import (
 	"bufio"
-	"cmd/go/internal/script"
 	"cmd/internal/pathcache"
+	"cmd/internal/script"
 	"errors"
 	"io"
 	"strings"