Review request for 7124308: [macosx] JSlider thumb moves to the right direction when it's used as a JTable cell editor

[Alexander Potochkin]

Hello

Please review the following fix:
http://cr.openjdk.java.net/~alexp/7124308/webrev.00/

the bug's description is here:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7124308

this bug is actually a duplicate of
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6348946
  which was fixed for our Lafs
(the fix was exactly the same for BasicSliderUI)

and now I forward port it to AquaSliderUI

Thanks
alexp