Set a default DISPLAY_NUMBER so that check_reconnect works again
	modified:   ts/5.1/packages/base/etc/thinstation.defaults
Update size req. to 20gb for installer
	modified:   ts/5.1/packages/installer/bin/install.sh
	modified:   ts/5.1/packages/installer/bin/installer
Clean up some xfwm setting on session init. Were stateless anyways.
	modified:   ts/5.1/packages/switchuser/sbin/session