Fix sorcery unit tests

When strict XML documentation checking was re-enabled, the test objects used in
sorcery would fail to register as the types were not marked internal and the
nodoc option wasn't used for the options. This fixes that problem, such that,
as one would hope, they once again pass.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@397571 65c4cc65-6c06-0410-ace0-fbb531ad65f3