[Pharo-project] [update 3.0] #30052

[Marcus Denker]

30052
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6745 Remove EncryptedMultiDisplayScanner and users
        https://pharo.fogbugz.com/f/cases/6745
        
10351 remove broken textual inst var renaming code
        https://pharo.fogbugz.com/f/cases/10351
        
10344 Fix SpecInterpreter
        https://pharo.fogbugz.com/f/cases/10344
        
10355 AlainTreeModel whenSelectedItemsChanged: fixed
        https://pharo.fogbugz.com/f/cases/10355


Diff information:
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Text-MarcusDenker.58
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Spec-Widgets-MarcusDenker.125
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Spec-Layout-MarcusDenker.41
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Polymorph-Widgets-MarcusDenker.793
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Spec-Core-MarcusDenker.101
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Morphic-MarcusDenker.1399
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Kernel-MarcusDenker.1368