Changes since 1.4.6

1) Added Smart Blacklisting.

2) Move determine_capabilities call to do_initialize to ensure that
   MANGLE_ENABLED is set before it is tested.

3) Fixed MAC address handling in the SOURCE column of tcrules.

4) Merged and corrected Steve Herber's command-specific help patch.

5) Removed some undocumented/braindead code from setup_masq()

6) Don't allow 'stop' when startup is disabled

7) Added ADMINISABSENTMINDED option.

8) Fixed adding addresses to ppp interfaces.

9) Added generic tunnel support.

10) Added support for Address Range Lists in /etc/shorewall/masq.