Add all possible units from IEEE488.2 to address some points of #26

Jan Breuer

2016-02-22 e7d3092dd149ce455eaa934cc63104b6273302f5

 libscpi/inc/scpi/error.h

@@ -44,7 +44,7 @@
extern "C" {
#endif

    void SCPI_ErrorInit(scpi_t * context);
    void SCPI_ErrorInit(scpi_t * context, int16_t * data, int16_t size);
    void SCPI_ErrorClear(scpi_t * context);
    int16_t SCPI_ErrorPop(scpi_t * context);
    void SCPI_ErrorPush(scpi_t * context, int16_t err);