relax shot origination check somewhat: allow general error of twice the muzzleFront and don't check z for falling tanks
relax shot origination check somewhat: allow general error of twice the muzzleFront and don't check z for falling tanks


kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1