Copyright date updateage

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2437 86ba831e-150c-0410-ab35-e06eaae15ed9
* rrect_t struct with public methods to replace scaledview/scaledwindow and view/viewwindow globals.
* Rewrote R_FillBackScreen to accept an arbitrary rrect_t instance.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2438 86ba831e-150c-0410-ab35-e06eaae15ed9