The toolbox doesn't currently accept AE2 wrenches; but it should.. should we add code so that any items which contain wrench in their getDisplayName() will be added?

Also, we currently print out stack traces in the log when we can't load either BuildCraft or IC2 wrenches, we should probably just print out something like this:

[WARNING] Refined Relocation was unable to load ic.core.item.tool.ItemToolWrench.