+1 for the spirit of this change, such inheritance was a nest of potential bugs
I'll try to review the diffs when I can...

2013/7/26 Marcus Denker <marcus.denker@inria.fr>

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11234 LargeNegativeInteger inherits from LargePositiveInteger (part 2)
� � � � https://pharo.fogbugz.com/f/cases/11234

Diff information:
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Kernel-MarcusDenker.1539.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Fuel-MarcusDenker.772.diff