[Pharo-dev] [update 3.0] #30339

[Esteban Lorenzano]

30339
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11443 Icon for explicitRequirement methods
        https://pharo.fogbugz.com/f/cases/11443
        
11147 FileReference(Object)>>doesNotUnderstand: #other
        https://pharo.fogbugz.com/f/cases/11147

Diff information:
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Polymorph-Widgets-EstebanLorenzano.888.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Nautilus-EstebanLorenzano.517.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/FileSystem-Tests-Core-EstebanLorenzano.58.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/FileSystem-Core-EstebanLorenzano.111.diff