Update some processing scripts (split_mod.sh for @Caldair)

These changes make the scripts a little easier to use. To process for tabletUI,
for instance, these are your options.

From the patch directory (2013$ETC) directory, you can run

 $ ~/path/to/ap_scripts/split_mod.sh services android.policy \
       framework-res.apk SystemUI

That will split them. You can also run this from the root auto_patcher directory.
Just add a path to the patch directory you want to process to one or more of the
files. So:

 $  ap_scripts/split_mod.sh android.policy framework-res.apk \
	patches/tabletUI/4.3/cm/20130815/services SystemUI.apk

As long as the path is on one, it will split them. You can split as many or
as few patches as you like, i.e. just services or android.policy and SystemUI.apk

I hope to soon make it even easier, i.e. ap_scripts/split_mod.sh tabletUI. Soon.