Added support for attack weapons.

Weapons are now defined in the script with a preceding
A- for attack or D- for defense, plus the exact weapon name as
displayed on the Armory web page, like this:
$weapons{"D-New Weapon Name"} = 1;

The same applies for the config files. Old config files won't
play until you add a D- prefix to each weapon (e.g. where
you have "Helmet" you should now make it "D-Helmet").

Weapons included are:

Defense Weapons:
Helmet
Shield
Chainmail
Plate Armor
Elven Cloak
Heavy Shield
Dragonskin

Attack Weapons:
Knife
Sling
Club
Spear
Warblade
Warg
Dragon



Things I think of adding in the next release (if there
is one):

- Support for repairs
- Native support for scheduling