Changes

Summary

1. fix crash with new CoFHCore (commit: 8f709f6) (details)
2. getWorld -> getWorldObj, remove IPowerReceptor from engines as it was (commit: 8e56124) (details)

Commit 8f709f680fee560138325ca6e9d25131fdd7649a by kontakt fix crash with new CoFHCore (commit: 8f709f6)
	common/buildcraft/core/TileBuildCraft.java (diff)
Commit 8e561241f58b625587901fd8b46ed78f9a1c9a24 by kontakt getWorld -> getWorldObj, remove IPowerReceptor from engines as it was not used (commit: 8e56124)
	common/buildcraft/builders/TileBuilder.java (diff)
	common/buildcraft/energy/TileEngine.java (diff)
	common/buildcraft/core/blueprints/RecursiveBlueprintReader.java (diff)
	common/buildcraft/energy/TileEnergyEmitter.java (diff)
	common/buildcraft/builders/TileArchitect.java (diff)
	common/buildcraft/energy/TileEngineCreative.java (diff)
	common/buildcraft/builders/TilePathMarker.java (diff)
	common/buildcraft/builders/TileFiller.java (diff)
	common/buildcraft/commander/TileZonePlan.java (diff)
	common/buildcraft/core/robots/boards/BoardRobotBuilder.java (diff)