Adding OS definitions for RHEL-clones

[Wil Cooley]

I'd like to make a patch for detection of Red Hat Enterprise Linux
clones, such as Whitebox and CentOS.  Should these simply identify as
themselves as the equivalent Red Hat classes ('redhat', 'redhat_es' and
'redhat_es_3') or should they be wholly distinct or both?

Wil
-- 
Wil Cooley                                 wcooley@nakedape.cc
Naked Ape Consulting                        http://nakedape.cc