Adding a file for Perl (5.20.0 and 5.18.2)

The referenced repo has 4 directories right now, 2 for
each version of Perl.  One has command line options
just for 64-bit compilation (which would actually be turned
on by default anyway, but I wanted to be explicit about it),
and the other will also enable threads.  Threads are generally
discouraged, so they specifically need to be opted into.
Change commit ID, repo source, and comment caps
Merge pull request #99 from PeterMartini/master

Adding a file for Perl (5.20.0 and 5.18.2)
Merge pull request #101 from CentOS/master

add CentOS7 image, update CentOS 6 image both 20140707
Update debian:squeeze for CVE-2014-4617 and debian:oldstable to add "sqeeuze-lts" (which is where new squeeze security updates are coming from)

Note that all the other commit hashes changed only because I amended the commit containing them to remove the squeeze and oldstable images so we didn't have extra bloat in our git history.
Merge pull request #103 from tianon/debian

Update debian:squeeze for CVE-2014-4617 and debian:oldstable to add "sqeeuze-lts" (which is where new squeeze security updates are coming from)
Remove obsolete docker-dev@0.6.7
Merge pull request #105 from dotcloud/remove-old-docker-dev

Remove obsolete docker-dev@0.6.7
Add new hello-world image

Fixes #102
Merge pull request #106 from tianon/hello

Add new hello-world image
change fedora maintainer email
Merge pull request #107 from lsm5/change-email

change fedora maintainer email
Update redis to expose the ability for data persistence
Add in a Hylang stackbrew image

  http://hylang.org/
  https://github.com/hylang
Merge pull request #109 from paultag/paultag/feature/add-hylang

Add in a Hylang stackbrew image
Merge pull request #108 from infosiftr/redis

Update redis to expose the ability for data persistence
fedora image updates

rebuilt 20/heisenbug/latest
new branch: 21
rebuilt rawhide (now moved to 22 since 21 branch)

	modified:   library/fedora
Merge pull request #110 from lsm5/fedora-updates

fedora image updates
Update python:2 to include "pip" by default
Update ruby to have onbuild triggers as a separate image