Add hedgehog effect heArtillery, allows to set per-hedgehog artillery mode Allowed effect values: 0 = not active 1 = permanently active 2 = termporarily active (sniper rifle)

void fpcrtl_halt(int num) {
    __coverity_panic__();
}

int fpcrtl_abs(int num) {
    return num >= 0 ? num : -num;
}