/etc/shorewall/tunnels template: expanded on *-save and *-update events. Refs #1957
/etc/shorewall/policy (20levelHigh): always apply "high" policy. Restore the condition when other policies will be defined. Refs #1957
/etc/shorewall/hosts template: expanded on *-save and *-update event. Refs #1957
shorewall/interfaces template (20ppp): generic PPP interface declaration. Refs #1957
shorewall/zones template: added comment headers..
ip-up.local, ip-down.local scripts: set "ipparam" option for pppd to invoke a custom pppd script. Refs #1957