[Pharo-project] [update 2.0] #20241

[Esteban Lorenzano]

20241
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Issue 6498:     Remove old events in favor of System announcements - Step 1
        http://code.google.com/p/pharo/issues/detail?id=6498
        
Issue 6476:     one Monticello package that should not be there
        http://code.google.com/p/pharo/issues/detail?id=6476
        
Issue 6505:     hasUnacceptedEdits breaks the debugger
        http://code.google.com/p/pharo/issues/detail?id=6505
        
Issue 6508:     Tests.Release.ReleaseTest.testMethodsWithUnboundGlobals
        http://code.google.com/p/pharo/issues/detail?id=6508