new TGTableLayout plus a nice way of integrating several canvases, axis
and sliders.


git-svn-id: http://root.cern.ch/svn/root/trunk@2115 27541ba8-7e3a-0410-8455-c3a389f83636

which included commits to RCS files with non-trunk default branches.


git-svn-id: http://root.cern.ch/svn/root/trunk@3 27541ba8-7e3a-0410-8455-c3a389f83636