Fix formating to cc.h, add stdbool.h detection

Jan Breuer

2016-06-02 a8a386b18d3507e2d84278094b262745758d4951

 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,