[RAPPS_NEW]

[RAPPS_NEW]
Initial work on a lightweight layout engine for ATL::CWindow.
Although a lot of work is still required making the classes more generic and layout-aware,
but it is already able to replicate the original rapps layout without explicit positioning of the windows.
Committing mostly for backup/history purposes.
CORE-9593

svn path=/trunk/; revision=67460