Refactor out protocol and luhn (protocol dependency) packages

internal/scanner/blockqueue.go

@@ -20,7 +20,7 @@ import (
 	"path/filepath"
 	"sync"
 
-	"github.com/syncthing/syncthing/internal/protocol"
+	"github.com/syncthing/protocol"
 )
 
 // The parallell hasher reads FileInfo structures from the inbox, hashes the

internal/scanner/blocks.go

@@ -21,7 +21,7 @@ import (
 	"fmt"
 	"io"
 
-	"github.com/syncthing/syncthing/internal/protocol"
+	"github.com/syncthing/protocol"
 )
 
 var SHA256OfNothing = []uint8{0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55}

internal/scanner/blocks_test.go

@@ -20,7 +20,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/syncthing/syncthing/internal/protocol"
+	"github.com/syncthing/protocol"
 )
 
 var blocksTestData = []struct {

internal/scanner/walk.go

@@ -23,9 +23,9 @@ import (
 	"strings"
 	"time"
 
+	"github.com/syncthing/protocol"
 	"github.com/syncthing/syncthing/internal/ignore"
 	"github.com/syncthing/syncthing/internal/lamport"
-	"github.com/syncthing/syncthing/internal/protocol"
 	"github.com/syncthing/syncthing/internal/symlinks"
 	"golang.org/x/text/unicode/norm"
 )

internal/scanner/walk_test.go

@@ -24,8 +24,8 @@ import (
 	"sort"
 	"testing"
 
+	"github.com/syncthing/protocol"
 	"github.com/syncthing/syncthing/internal/ignore"
-	"github.com/syncthing/syncthing/internal/protocol"
 )
 
 type testfile struct {