My definition of the application domain, is any file that a normal user 
is expected to execute.   It can either have a  transition or not.  If I 
define application_domain then it will transition.  If I just define 
application_executable_file, then logged in users can execute it without 
a transition.

Daemons for the most part should NOT be application_domains.   This way 
we can dontaudit getattr of daemons that users would/should not be 
allowed to execute. 

Some applictions can be in both domains.  For example cvs, rsync can be 
run without transitioning by users but when run from an initscript they 
transition. 

This patch makes changes to the pool to match this.

I included the entire readahead patch in this patch as this should