switch symlink target type to string

(path can't represent relative paths)

tests/unixfs.go

@@ -782,12 +782,12 @@ func (tp *provider) TestLs(t *testing.T) {
 	if entry.Name != "name-of-symlink" {
 		t.Errorf("expected name = name-of-symlink, got %s", entry.Name)
 	}
-	if entry.Target.String() != "/foo/bar" {
+	if entry.Target != "/foo/bar" {
 		t.Errorf("expected symlink target to be /foo/bar, got %s", entry.Target)
 	}
 
-	if int(entry.Size) != len(entry.Target.String()) {
-		t.Errorf("expected size = %d, got %d", len(entry.Target.String()), entry.Size)
+	if int(entry.Size) != len(entry.Target) {
+		t.Errorf("expected size = %d, got %d", len(entry.Target), entry.Size)
 	}
 	if l, ok := <-entries; ok {
 		t.Errorf("didn't expect a second link")

unixfs.go

@@ -53,7 +53,7 @@ type DirEntry struct {
 	// Only filled when asked to resolve the directory entry.
 	Size   uint64   // The size of the file in bytes (or the size of the symlink).
 	Type   FileType // The type of the file.
-	Target Path     // The symlink target (if a symlink).
+	Target string   // The symlink target (if a symlink).
 
 	Err error
 }