Added Crying Obsidian and Crying Obsidian Seeds.
Changed unlocalized names.
Eclipse.ContextMenu -> Source -> Clean(All)
Fixed an Eclipse-cleaner-caused compilation error.
Added creative tabs.

Changed that bloody teleport crystal's animation.
Suppressed Thaumcraft node generation.
Fixed missing import.
Ported over unstable ice.
Converted Minecraft's biome block replacement code for IaS.
Limited teleport crystal's use in Nyx to above crying obsidian.
Added the /ias command.

Right now, all it supports is '/ias goto <overworld|nyx>' for
teleportation to and from Nyx.
Altered IaS's interplanar teleportation slightly.
Added some height variance to Nyx.
Ported over permafrost.
Added biome block variance.