[MERGED PR] Nucular Fishin' Engine

[amylizzle]

I actually haven't changed the values of the radres gene or roach. The end result is just calculated differently. As it stands right now, what was previously radiation immunity (100 rad resistance) now comes to 99% resistance. Which is to say, incoming radiation doses are reduced by 99% before being absorbed. Wearing a full suit of radiation gear (hood and suit) gives another 100 rad resistance, and will result in 99.5% reduction.

So basically, if you were immune before, you're *nearly* immune now. Just don't hold a nuclear fuel rod in your hands for 20 minutes or you might get sick.