TBR Revert "veyron: Update go.tools to its new golang.org location."

This reverts commit 5e2aa37e59e3277bcff2ddd7bef8cfd45db83815.

Change-Id: If298d7929424e9062b9f8c9bfe0cc1444e0081c5
diff --git a/runtimes/google/ipc/stream/vif/auth.go b/runtimes/google/ipc/stream/vif/auth.go
index bba4d16..6a05496 100644
--- a/runtimes/google/ipc/stream/vif/auth.go
+++ b/runtimes/google/ipc/stream/vif/auth.go
@@ -7,7 +7,7 @@
 	"io"
 	"net"
 
-	"golang.org/x/crypto/nacl/box"
+	"code.google.com/p/go.crypto/nacl/box"
 
 	"veyron.io/veyron/veyron/runtimes/google/ipc/stream/crypto"
 	"veyron.io/veyron/veyron/runtimes/google/ipc/stream/message"
@@ -49,7 +49,7 @@
 //      pairs, sending the public key to the peer as a crypto option.  The
 //      remainder of the communication is encrypted as HopSetupStream messages
 //      using NewControlCipherIPC6, which is based on
-//      golang.org/x/crypto/nacl/box.
+//      code.google.com/p/go.crypto/nacl/box.
 //
 //    - Once the encrypted HopSetupStream channel is setup, the client and
 //      server authenticate using the vc.AuthenticateAs{Client,Server} protocol.