Fix some error messages in session log
	new file:   ts/5.1/packages/xfwm4/build/extra/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml
	modified:   ts/5.1/packages/xfwm4/build/extra/etc/xfwm4.functions