[Pharo-project] tests for FasterSets

Hi, I have saved some tests for A lot of subclasses of Dictionary and Set in 'PharoTaskForces'. Those tests only test basic behavior of a Set or a Dictionary. You will probably find errors and failures not due to fasterSets specificities : - uncommented classes - methods unclassified - class implementation bugs ( like smallDictionary . MethodDictionary ) - class specific behavior ( in this case, tests should maybe be rewriten).