Update ubuntu images for heartbleed

`RUN apt-get update && apt-get install -y $(dpkg-query -W '*ssl*' | awk '{ print $1 }')` hackpatch for now
Add ubuntu changelog comment similar to debian changelog
Merge pull request #44 from tianon/update-ubuntu

Update ubuntu images for heartbleed
add centos distribution
add docker directory, per tianon
Merge pull request #46 from CentOS/master

add official centos distribution image
Switch "ubuntu" over to new official "Ubuntu Core" images
Merge pull request #49 from tianon/ubuntu-core

Switch "ubuntu" over to new official "Ubuntu Core" images
Fixed typo in changelog date
Fix hipache

Background is in https://github.com/dotcloud/hipache/issues/133

Pretty much, the 0.2.4 which this is based on is no longer working - so, I'm updating it to the latest stable Hipache release - before we release 0.3 which contains important changes.
Merge pull request #51 from dmp42/patch-1

Fix hipache
Added 0.6.8 and updated latest in registry libfile; added Joffrey as maintainer
Merge branch 'master' of github.com:dotcloud/stackbrew
Merge pull request #50 from adamjgray/patch-1

Fixed typo in changelog date
Update hipache
Adding myself as additional maintainer
Merge pull request #54 from dmp42/patch-1

Update hipache
update fedora-rawhide
Merge pull request #55 from lsm5/rawhide

update fedora-rawhide
Update registry

By popular request: https://github.com/dotcloud/docker-registry/issues/326#issuecomment-42803697