* Fixed custom scrollbar code in newdifftool; the thumb/slider now goes   all the way to the top and bottom and the arrow keys auto-repeat. On    unix systems the thumb also sinks in when you press it to be consistent   with standard unix scrollbars.
* Fixed custom scrollbar code in newdifftool; the thumb/slider now goes
  all the way to the top and bottom and the arrow keys auto-repeat. On 
  unix systems the thumb also sinks in when you press it to be consistent
  with standard unix scrollbars.

bk: 3f6617f2PlOpOQG0yxQKEJ3ibhaRuw
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper