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  CLASS: FileSetInfo     --AP
  PUBLIC METHODS:                                       
    FileSet()    - Default constructor: name = "";num,time=0,wp=None
 
  USAGE NOTES:
   User normally only inspects these as part of a FileSetList.
  
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  METHOD:  Archive::getFileSetInfo
       
   Grabs information about the file sets on the root volume.
 
  ARGS:
    fslst      OUT     ptr to filesetlist.
 
  RETURNS:
  
  PRE-CONDS:
  
  POST-CONDS:
  
  ERRORS:
   error_No_free_store
   error_Bad_tag_descriptor_type
  
  NOTES:
     This makes the most sense on WORM, where there can be many
     file sets.
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