[Pharo-project] [update 2.0] #20589

[Esteban Lorenzano]

20589
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Issue 7660:     comments in isAbstractClass are wrong
        https://code.google.com/p/pharo/issues/detail?id=7660
        
Issue 7659:     use more efficient setSourcePointer: in CompiledMethod
        https://code.google.com/p/pharo/issues/detail?id=7659
        
(almost the last one :)

Diff information:
http://ss3.gemstone.com/ss/Pharo20/Kernel-EstebanLorenzano.1337.diff