Content-Rewrite default expectations change

[mmarum-sugarcrm]

Original author: [email protected] (January 29, 2013 18:06:26)

Discussed here: https://groups.google.com/forum/#!msg/opensocial-and-gadgets-spec/DmNdUzjk0kw/aRYn59MAZa4J

There is less need now for this kind of feature unless it's specifically asked for, so it would be better for all implementors to assume the unspecified include means nothing rather than everything.

Original issue: http://code.google.com/p/opensocial-resources/issues/detail?id=1332