make openjdk use the ppa
added recipe for installing java 7 from oracle via ppa.
fixes issue with some datacenters with outbound access rules that block the default port for retrieving gpg keys for ppa's.
you can sometimes use a previous patch to patch a new release like use 1.4.0 to patch nginx 1.4.5
Merge pull request #3 from donnoman/master

Upstream changes