Alternative "switch" construct for large switches (uses div to branch into inner switches; 

git-svn-id: http://protobuf-net.googlecode.com/svn/trunk@655 b72047a4-3652-0410-9617-b3994939e97b
FIX: error in that (wrong divisor)

git-svn-id: http://protobuf-net.googlecode.com/svn/trunk@656 b72047a4-3652-0410-9617-b3994939e97b