040000 tree 5abc056015bb910eb6d3216e1455338b88a60a02	ajc
040000 tree 6dfd30a7a93d15a21edf57e0c08958c8cdf64a98	compiler
040000 tree 9360527392f27ffa1d9bf105af49ed77f25cc180	core
040000 tree d0357b827490434382aafb1c3353f762cba5730d	internal