[Pharo-project] [update 2.0] #20583

[Marcus Denker]

20583
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Issue 7637:     SourceFileArrayTest hardcodes some offsets
        http://code.google.com/p/pharo/issues/detail?id=7637
        
Issue 7636:     fix file name of sources file in #downloadSources
        http://code.google.com/p/pharo/issues/detail?id=7636
        
Issue 7634:      Slow Package Menu on Mouse Button Right Click + Fix
        http://code.google.com/p/pharo/issues/detail?id=7634



Diff information:
http://ss3.gemstone.com/ss/Pharo20/Zinc-System-Support-MarcusDenker.4.diff
http://ss3.gemstone.com/ss/Pharo20/Tests-MarcusDenker.520.diff
http://ss3.gemstone.com/ss/Pharo20/Manifest-CriticBrowser-MarcusDenker.62.diff