Add ItemStackMapTest

This test was missing from c056293b38cb9a1296937d91746b175252be044a
Throw BlockPlaceEvent when placing double slabs. Fixes BUKKIT-2469
Handle beds and doors the same way as other blocks. Fixes BUKKIT-3437
Relates to: BUKKIT-3438
Get the BlockState before changing the block. Fixes BUKKIT-3441
Fix entities traveling sideways. Addresses BUKKIT-3443

Original: Update mappings to correct 1.4.6 version.
Initialize entity data before spawning them. Fixes BUKKIT-3209

Vanilla does the initialize before spawning everywhere except in the
SpawnerCreature, our spawn event depends on this behavior to be
consistent.
Update CraftBukkit to Minecraft 1.4.7
Updated version to 1.4.7-R0.1 in pom.xml for Beta.
Updated version to 1.4.7-R0.2-SNAPSHOT for development towards next release.
Place beds with the correct data. Fixes BUKKIT-3447
Automated file rename
Automated symbol rename