There are no real changes in this commit but it removes all trailing white
space from our source files. This avoids problems when applying patches and
making diffs and it would be nice to prevent it from reappearing.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65680 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Forward declare wxWindow and wxDC classes in wx/ribbon/art.h to avoid errors
in (PCH-less?) buildbot builds.
Also include header containing declarations of private Mac functions in
implementation file (closes#11203).
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61949 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
