* Add stunnel 4.56

	new file:   network/stunnel/stunnel-4.56-config.patch.xz
	new file:   network/stunnel/stunnel-4.56-genkey.patch.xz
	new file:   network/stunnel/stunnel-4.56-nopemgen.patch.xz
	new file:   network/stunnel/stunnel-4.56-tmpfilesd.patch.xz
	new file:   network/stunnel/stunnel.build