Add support for optional command header part

Jan Breuer

2013-06-24 4925f462dc0eeb608d7adba379dd04771f92eb51

 libscpi/inc/scpi/types.h

@@ -136,11 +136,14 @@
        TokDoubleQuoteProgramData,
        TokProgramExpression,
        TokCompoundProgramHeader,
        TokIncompleteCompoundProgramHeader,
        TokCommonProgramHeader,
        TokIncompleteCommonProgramHeader,
        TokCompoundQueryProgramHeader,
        TokCommonQueryProgramHeader,
        TokWhiteSpace,
        TokAllProgramData,
        TokInvalid,
        TokUnknown,
    };
    typedef enum _token_type_t token_type_t;