While debugging a problem with signature modules, I realized cuckoo wasn't providing raw strings to users wanting to inspect actual buffer arguments with struct.unpack.  They were being rewritten before the rest of cuckoo could see them instead of properly only escaping for display purposes in the interface.  Since escaping wasn't done properly (the escape character wasn't being escaped, making it impossible to undo cuckoo's escaping), I've instead added a new dict item with the raw value of the argument for processing use.  I've also removed the bogus cleanup_value() function which was being called for every single API, unnecessarily tainting the behavioral analysis results of arguments and return values.