Update 8 named items

Assault on Summerfield
Chest loot

Blockade Buster
Chest loot

Undermine
Chest loot

Siegebreaker
Chest loot

Epic item upgrade

 * Epic Brimstone Verge
 * Greater Evocation Focus
 * higher DC
 * Epic Cacophonic Verge
 * Great Evocation Focus
 * higher DC
 * Epic Illusionist's Garb
 * Intelligence +7
 * Greater Illusion Focus
 * Epic Robe of Dissonance
 * now binds properly and has a minimum level
 * Epic Shimmering Pendant
 * Perform +15
 * higher caster level on its Suggestion effect
 * The recharge functionality of its charges will also now work properly
 * Epic Souleater
 * Red Augment Slot
 * Vampirism
 * +2 profane bonus to Strength
 * higher hit dice limit on its Trap the Soul effect
 * Epic Utility Vest
 * Exceptional Intelligence +2
 * Disable Device +20
 * Open Lock +20
 * Epic Winter's Wrath
 * higher DC
 * Greater Potency IV Wand of Blasting
 * higher DC