Changes since 1.3.13

1. Fix 'shorewall add' bug.

2. Add OLD_PING_HANDLING option

3. Allow adding alias labels under ADD_IP_ALIASES=Yes.

4. Allow adding alias labels under ADD_SNAT_ALIASES=Yes.

5. Use the routing table to generate list of subnets to be masqueraded
   when an interface name appears in the SUBNET column of
   /etc/shorewall/masq.

6. Restore $dev.$vid naming of VLAN interfaces.