Item9850: Change expand option to Options hash { EXPAND => }

The Group API was changed to pass a true/false parameter to expand nested groups. This is short sighted and makes it more difficult to add / use other options, such as checking or not checking for user / group existence.

Change the $expand parameter from a simple boolean parm to an options hash

   { 
     EXPAND => <true/false }
   }

Marking urgent since this is part of the API,that will be initially released in 1.1.1, we should get it right.

-- GeorgeClark - 20 Oct 2010

Per Babar's recommendation, and consistent with other functions, the options hash should use lower case options - renamed to "expand".

-- GeorgeClark - 21 Oct 2010

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