Fix for deferred-objects regression

git-svn-id: http://protobuf-net.googlecode.com/svn/trunk@661 b72047a4-3652-0410-9617-b3994939e97b
Build 662

git-svn-id: http://protobuf-net.googlecode.com/svn/trunk@662 b72047a4-3652-0410-9617-b3994939e97b
Build 663 (build tool fix only)

git-svn-id: http://protobuf-net.googlecode.com/svn/trunk@663 b72047a4-3652-0410-9617-b3994939e97b