96e22a3 Fix the procedure for getting default values of command parameters.

3 files Authored by jcholast 12 years ago, Committed by mkosek 12 years ago,
    Fix the procedure for getting default values of command parameters.
    
    The parameters used in default_from of other parameters are now
    properly validated before the default_from is called.
    
    ticket 1847
    
        
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