SirSengir/BuildCraft — pull request #218 by taralx (2012-09-06 06:20:40+00:00)
Title: Properly update neighbors for redstone signal changes.

Without this, you get strange block update problems because a redstone wire can detect an active pipe from 1 block away, but wasn't getting updated when the redstone state changed.

The alternative to this is to make isIndirectlyPoweringTo return false, but then it's a gimpy redstone signal.