codec: use single line comments to comment out +build in various files

codec/gen-helper.generated.go

@@ -1,4 +1,4 @@
-/* // +build ignore */
+// comment this out // + build ignore
 
 // Copyright (c) 2012-2018 Ugorji Nwoke. All rights reserved.
 // Use of this source code is governed by a MIT license found in the LICENSE file.

codec/gen-helper.go.tmpl

@@ -1,4 +1,4 @@
-/* // +build ignore */
+// comment this out // + build ignore
 
 // Copyright (c) 2012-2018 Ugorji Nwoke. All rights reserved.
 // Use of this source code is governed by a MIT license found in the LICENSE file.

codec/values_flex_test.go

@@ -1,4 +1,4 @@
-/* // +build testing */
+// comment this out // // + build testing
 
 // Copyright (c) 2012-2018 Ugorji Nwoke. All rights reserved.
 // Use of this source code is governed by a MIT license found in the LICENSE file.

codec/values_test.go

@@ -1,4 +1,4 @@
-/* // +build testing */
+// comment this out // + build testing
 
 // Copyright (c) 2012-2018 Ugorji Nwoke. All rights reserved.
 // Use of this source code is governed by a MIT license found in the LICENSE file.