kicad: switch to best try from unstable and 5.1.5

make unstable use kicad-libraries
  still using a link in $out..., not sure that's a bad thing
  this allows setting that path in makeWrapperArgs
    can't use $out there

kicad-with-packages3d -> kicad and kicad-small

default to OCCT, OCE is outdated
  enforce OCCT on aarch64, where OCE is broken
  withOCE flag allows using OCE on non-aarch64