Added message handling code for cruor drops in abyssea.

This won't make cruor drop till someone creates code to handle cruor chaining or edits their copy for non retail amounts however. I tested using
the  "Cruor = exp * 0.25f;" that Compmike19 had left in the file I was working with.
Merge pull request #389 from TeoTwawki/misc

Added message handling code for cruor drops in abyssea.