Changes

Summary

1. fix NPE with the builder robot (commit: 9d4f92e) (details)
2. make the builder robot not pick up materials in creative worlds (commit: 2b68f8f) (details)
3. render overlay of helmets on robots (commit: c79942a) (details)
4. fix planter robots not freeing reserved blocks (commit: a21a49b) (details)

Commit 9d4f92e66835295106eb203250ea3987c7d4a062 by hea3venmc fix NPE with the builder robot (commit: 9d4f92e)
	common/buildcraft/core/builders/BuildingSlotMapIterator.java (diff)
Commit 2b68f8f7dd66f9df73d8180137d1af7b4de843fc by hea3venmc make the builder robot not pick up materials in creative worlds (commit: 2b68f8f)
	common/buildcraft/robotics/boards/BoardRobotBuilder.java (diff)
Commit c79942a88c6cebd96afa88a75045f8828efbff12 by hea3venmc render overlay of helmets on robots (commit: c79942a)
	common/buildcraft/robotics/render/RenderRobot.java (diff)
Commit a21a49b0efe8698d3fb57e6950fc970406d2d78f by hea3venmc fix planter robots not freeing reserved blocks (commit: a21a49b)
	common/buildcraft/core/lib/utils/PathFindingSearch.java (diff)