Adding upstream version 1.11.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tx.go

@@ -0,0 +1,23 @@
+// Copyright 2016 Qiang Xue. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package dbx
+
+import "database/sql"
+
+// Tx enhances sql.Tx with additional querying methods.
+type Tx struct {
+	Builder
+	tx *sql.Tx
+}
+
+// Commit commits the transaction.
+func (t *Tx) Commit() error {
+	return t.tx.Commit()
+}
+
+// Rollback aborts the transaction.
+func (t *Tx) Rollback() error {
+	return t.tx.Rollback()
+}