Issue Title

The input busses of a mixer are no longer used separated from each other.

Expected Behavior

Process each mixer recipe in each input bus separate from the other.

Current Behavior

2 input bus, one with circuit 1, one with circuit 2

Mixer Recipe A: circuit no 1, ingrediant x,y,z
Mixer Recipe B: circuit no 2, ingrediant x,z

Problem is if you process recipe A even if there is the circuit 1 in the same bus with all the ingrediant it still might recognize circuit 2 - EVEN though its not in the same bus - and process recipe B.
I experienced this problem at first with indium

Game Environment

If you are using a Modpack:

• Modpack Name: GTNH
• Version used: 2.0.7.0
• Download Link if possible:

If not using a modpack:

• Mod List - Upload to Pastie/Pastebin/etc:

Also include:

• Gregtech version:
• IC2 version:
• Java version:
• Operating System:

Misc Info

Check all that apply ([ ] -> [x] - use a lowercase x)

• [ x]    Using GT:NH/GT:New Horizons?
•    Single Player?
• [ x]    Multi Player?

Implemented in recent push.