BuildCraft/BuildCraft — pull request #750 by Need4Speed402 (2013-04-17 02:51:13+00:00)
Title: ConnectionMatrix changed to save memory.

While looking at the buildcraft code, I noticed that this is extremely innifetient. For saving, it writes 6 bytes to just store 6 booleans to save what the pipe is connected to. This changes sets each bits in a byte to write all 6 booleans. Now only uses 1 byte instead of 6.