Bukkit

Lots of bug fixes.

Updated spells and wands, including changing a bunch of spell icons. Might be confusing at first, but I'm hoping I made better picks this time.

Updated alter and various construction material lists to work with new materials, up through 1.7.2 (e.g. stained glass, red sand, etc).

Added more customization options to the arrow spell, and a new "sniper" variant.