[update 2.0] #20248

20248
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Issue 6441: Several CompiledMethod fixes from Squeak
        http://code.google.com/p/pharo/issues/detail?id=6441
       
Issue 6444: Improve NonInteractiveUIManager>>nonInteractive:
        http://code.google.com/p/pharo/issues/detail?id=6444
       
Issue 6486: Fix Slider missing method
        http://code.google.com/p/pharo/issues/detail?id=6486
       
Issue 6488: Fix SplitterMorph
        http://code.google.com/p/pharo/issues/detail?id=6488
       
Issue 6543: GeneralScrollPane>>#newScroller is wrongly assigning red color
        http://code.google.com/p/pharo/issues/detail?id=6543