Migrated OmniWrench module from MPSA to MPS.

This will require both https://dl.dropboxusercontent.com/u/66472801/New%20APIs/MFR-API-2.4.0-478.zip and https://dl.dropboxusercontent.com/u/66472801/New%20APIs/Railcraft_API_latest.zip to be uploaded to machinemuse.minecraftforge.net for the buildscript to run properly.