Bukkit

• Use delayed block changes in batches to allow large construction without killing the server.
• Fix issues with XP (non mana-based) wands
• Add material names to magic build materials (including sub-types for certain materials, wool, stained glass, wood, etc)
• Fix targeting issues related to stained glass (only blink should target through them)

Issues I've noticed in 1.7.2 so far:
- The lightning spell creates no visual effect
- Enchanting is a little wonky, something to do with swapping out the item for an enchantable one, I think. Seems to work though.
- Using the creative inventory will destroy any wands you have
- Underwater blink is broken, seems to be a bukkit interact event issue