WvSystem(const char cmd[], const char *a0=NULL, const char *a1=NULL, const char *a2=NULL, const char *a3=NULL, const char *a4=NULL, const char *a5=NULL, const char *a6=NULL, const char *a7=NULL, const char *a8=NULL, const char *a9=NULL, const char *a10=NULL, const char *a11=NULL, const char *a12=NULL, const char *a13=NULL, const char *a14=NULL, const char *a15=NULL, const char *a16=NULL, const char *a17=NULL, const char *a18=NULL, const char *a19=NULL)
Construct a WvSystem from a simple list of strings.