Summary: Removed unnecessary castings and other warnings
Reviewed-by: peterz
Contributed-by: NFlorian Brunner <fbrunnerlist@gmx.ch>

Summary: WindowsPlacesBar should use default icon for folders that doesn't have own icon
Reviewed-by: loneid

Summary: Removed casting component to JSlider from MetalIconFactory
Reviewed-by: alexp

Summary: The fix for 6675802 is replaced by a try-catch clause that catches SequrityExceptions for applets.
Reviewed-by: alexp

Summary: The problem code in Popup class is surrounded by AccessController.doPrivileged()
Reviewed-by: alexp

6612531: api/javax_swing/ScrollPaneLayout/index.html#xxxLayoutSize (ScrollPaneLayout2024) throws NPE
Summary: Added a check for the NPE
Reviewed-by: alexp

Reviewed-by: peterz

Summary: Several swing.text methods are not marked thread-safe anymore.
Reviewed-by: gsm

Summary: Both POST and GET can now be processed asynchronously; PageLoader refactored
Reviewed-by: gsm

Reviewed-by: ohair, xdono