Make sure that gtk/a11y/gtkpopoveraccessible.h is copied, so that programs
using GTK+'s a11y will compile correctly.
copy ..\..\..\gtk\a11y\gtkpanedaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y
+copy ..\..\..\gtk\a11y\gtkpopoveraccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y
+
copy ..\..\..\gtk\a11y\gtkprogressbaraccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y
copy ..\..\..\gtk\a11y\gtkradiobuttonaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y
copy ..\..\..\gtk\a11y\gtknotebookaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

copy ..\..\..\gtk\a11y\gtknotebookpageaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

copy ..\..\..\gtk\a11y\gtkpanedaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

+copy ..\..\..\gtk\a11y\gtkpopoveraccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

copy ..\..\..\gtk\a11y\gtkprogressbaraccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

copy ..\..\..\gtk\a11y\gtkradiobuttonaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y

copy ..\..\..\gtk\a11y\gtkradiomenuitemaccessible.h $(CopyDir)\include\gtk-$(ApiVersion)\gtk\a11y