[Pharo-project] [update 2.0] #20273

[Marcus Denker]

20273
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Issue 6619:     Tests.Bugs.ChangeSetClassChangesTest
        http://code.google.com/p/pharo/issues/detail?id=6619
        
Issue 6609:     ProcessSpecificVariable bug
        http://code.google.com/p/pharo/issues/detail?id=6609