[update 2.0] #20518

20518
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Issue 7433: Fixing command line
        http://code.google.com/p/pharo/issues/detail?id=7433
       
Issue 7432: nautilus option for choosing old style keybindings and new one
        http://code.google.com/p/pharo/issues/detail?id=7432
       
Issue 7420: Random behavior in ListComposableModel>>whenListChanged:
        http://code.google.com/p/pharo/issues/detail?id=7420
       
Issue 7431: [Cleanup]: AbstractNautilusPlugin class>>#defaultPosition comment suggests non-existent options
        http://code.google.com/p/pharo/issues/detail?id=7431
       
Diff information:
http://ss3.gemstone.com/ss/Pharo20/UpdateStreamer-Core-MarcusDenker.8.diff
http://ss3.gemstone.com/ss/Pharo20/System-CommandLine-MarcusDenker.75.diff
http://ss3.gemstone.com/ss/Pharo20/Spec-Widgets-MarcusDenker.91.diff
http://ss3.gemstone.com/ss/Pharo20/Spec-Tests-MarcusDenker.19.diff
http://ss3.gemstone.com/ss/Pharo20/NautilusRefactoring-MarcusDenker.70.diff
http://ss3.gemstone.com/ss/Pharo20/NautilusCommon-MarcusDenker.115.diff
http://ss3.gemstone.com/ss/Pharo20/Nautilus-MarcusDenker.414.diff
http://ss3.gemstone.com/ss/Pharo20/FuelCommandLineHandler-MarcusDenker.19.diff