Add support for creating Xcode docsets.  See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html for more info.
Add support for creating Xcode docsets.  See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html for more info.

--HG--
extra : convert_revision : svn%3A8631bf8a-c64b-0410-883c-f3eb003322f7/trunk%401127

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