Add new AUTO special value, resolve #20

Jan Breuer

2015-03-18 323ec66d62f19673e66762fe25585746d3b2a5e0

 libscpi/inc/scpi/types.h

@@ -171,7 +171,8 @@
        SCPI_NUM_DOWN,
        SCPI_NUM_NAN,
        SCPI_NUM_INF,
        SCPI_NUM_NINF
        SCPI_NUM_NINF,
        SCPI_NUM_AUTO
    };
    typedef enum _scpi_special_number_t scpi_special_number_t;