"Install" the newly-introduced gpropertyaction.h header file, which is
required for GIO.
copy ..\..\..\gio\gpollableutils.h $(CopyDir)\include\glib-$(ApiVersion)\gio
+copy ..\..\..\gio\gpropertyaction.h $(CopyDir)\include\glib-$(ApiVersion)\gio
+
copy ..\..\..\gio\gproxy.h $(CopyDir)\include\glib-$(ApiVersion)\gio
copy ..\..\..\gio\gproxyaddress.h $(CopyDir)\include\glib-$(ApiVersion)\gio
copy ..\..\..\gio\gpollableinputstream.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
copy ..\..\..\gio\gpollableoutputstream.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
copy ..\..\..\gio\gpollableutils.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
+copy ..\..\..\gio\gpropertyaction.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
copy ..\..\..\gio\gproxy.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
copy ..\..\..\gio\gproxyaddress.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r
copy ..\..\..\gio\gproxyaddressenumerator.h $(CopyDir)\include\glib-$(ApiVersion)\gio
\r