Alternative Solution to the Cargo Shorts Problem

Instead of preventing shorts from being fitted, as #7783 did, this PR doubles layering encumbrance for everything but the torso.

Before:

![screen shot 2014-05-31 at 1 31 02 pm](https://cloud.githubusercontent.com/assets/4412171/3139665/b246fcc0-e8e9-11e3-8467-6a547036afe5.png)

After:

![screen shot 2014-05-31 at 1 33 09 pm](https://cloud.githubusercontent.com/assets/4412171/3139666/b81a9260-e8e9-11e3-96da-59820b9883eb.png)

And to get 0 leg encumbrance, I have to remove both my cargo shorts and one pair of drop leg pouches, fixing both remaining issues KA101 outlined in #7770 vis-a-vis wearing cargo shorts on top of pants and wearing two pairs of drop leg pouches at the same time.

![screen shot 2014-05-31 at 1 37 55 pm](https://cloud.githubusercontent.com/assets/4412171/3139681/5549b46c-e8ea-11e3-8d97-c090f532c10f.png)