Fix FALSE and TRUE in examples. Make scpi-def.cpp similar to c version

Jan Breuer

2016-06-02 c20eadcfd1137398b2e63a870b412787ef4c27a9

 libscpi/inc/scpi/expression.h

@@ -41,7 +41,7 @@
#ifdef __cplusplus
extern "C" {
#endif
    

    enum _scpi_expr_result_t {
        SCPI_EXPR_OK = 0,
        SCPI_EXPR_ERROR,