DO NOT MERGE: Revert "Update package names to work with the proto3 compiler"

This reverts commit 7bcf8af9df8c24687f27fc262764628c4d80ff51.

Change-Id: Ice5f6a295e1d300bf5f39b85052482ef9720de0a
diff --git a/proto/polo.proto b/proto/polo.proto
index fbe95e9..0491439 100644
--- a/proto/polo.proto
+++ b/proto/polo.proto
@@ -2,6 +2,7 @@
 
 package polo.wire.protobuf;
 
+option javanano_use_deprecated_package = true;
 option java_outer_classname = "PoloProto";
 option java_package = "com.google.polo.wire.protobuf";
 option optimize_for = LITE_RUNTIME;