Function enable_hooks

plugins/add-spatter.cpp:368–373

}

static void enable_hooks(bool enable)
{
    is_enabled = enable;
    INTERPOSE_HOOK(item_hook, isImprovable).apply(enable);
    INTERPOSE_HOOK(product_hook, produce).apply(enable);
}

DFhackCExport command_result plugin_load_world_data (color_ostream &out) {
    if (find_reactions(out)) {