first pass of wxUniv merge - nothing works, most parts don't even compile

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10673 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/button.cpp

@@ -11,6 +11,10 @@
 #pragma implementation "button.h"
 #endif
 
+#include "wx/defs.h"
+
+#if wxUSE_BUTTON
+
 #include "wx/button.h"
 
 #include <gdk/gdk.h>
@@ -186,3 +190,5 @@ wxSize wxButton::DoGetBestSize() const
     return ret;
 }
 
+#endif // wxUSE_BUTTON
+