libre: [libretools]: Enable to create chroots again
    
    Without that fix we had:
        $ sudo libremakepkg make
        [...]
        ==> ERROR: pacstrap: invalid option -- 'd'
        ==> ERROR: Failed to install all packages
    
    Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>