FreeCell resurrection

I fixed the old FreeCell code from Squeak to be able to run on Pharo 6 and 7.

Repository: https://github.com/pavel-krivanek/FreeCell

How to load: 

Metacello new

  baseline: 'FreeCell';

  repository: 'github://pavel-krivanek/FreeCell/src';

  load.

How to run:

FreeCell open.

Cheers,

-- Pavel