and after the DC reorg to make the transition
smoother (indeed possible).
Move the wxImplDC code to its future place in
dcbase.cpp and wx/dc.h
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45901 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775