Don't call ChunkDataEvent.Load async. Fixes Xycraft ChunkDataEvent.Load handling.

Closes #604.
Signed-off-by: Ross Allan <rallanpcl@gmail.com>

Conflicts:
	src/minecraft/net/minecraft/world/chunk/storage/AnvilChunkLoader.java
Merge pull request #3 from MinecraftPortCentral/MC147

Don't call ChunkDataEvent.Load async. Fixes Xycraft ChunkDataEvent.Load ...