Fixed:
  * Mis-matched overly-restrictive quad checks preventing -windows-{msvc,gnu*}
    from matching -win7- in addition to the usual -pc-
    (39f7f8005fc016356973345847f974a6f3a88c9c)
    (bpo: f150d3f84d54a988432beccc070fb33e4df4a5ac)
    (#77)