[update 2.0] #20249

20249
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Issue 6535: New Nautilus version
        http://code.google.com/p/pharo/issues/detail?id=6535
       
Issue 6496: Remove Source Code Authors
        http://code.google.com/p/pharo/issues/detail?id=6496
       
Issue 6452: Few Morphic fixes
        http://code.google.com/p/pharo/issues/detail?id=6452
       
Issue 6317: Monkey barks when a test package has been changed
        http://code.google.com/p/pharo/issues/detail?id=6317