Changes

Summary

1. add gate copiers, close #2081 (commit: 59686cd) (details)

Commit 59686cd481611064dd913b025a0292dc6b401b2c by asiekierka add gate copiers, close #2081 (commit: 59686cd)
	common/buildcraft/BuildCraftTransport.java (diff)
	common/buildcraft/transport/Gate.java (diff)
	common/buildcraft/transport/BlockGenericPipe.java (diff)
	common/buildcraft/transport/ItemGateCopier.java