[keycloak-dev] abstracting out picketlink

[Bill Burke]

Don't laugh, I know I said I wasn't going to do this, but I am now. 
Abstracting out picketlink will make an easier transition for me to fit 
in the new version of Picketlink.  Obviously it will also allow us to 
dump Picketlink too if it turns out its just not going to scale or they 
aren't accepting our pull requests.  Hopefully we won't have to do that 
though.

So merge from master often as I'll be committing as I go.

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com