Fix to getchanged correctly for yum groupinstall.
Add an example for installing a group with the yum module.
Slight refactorization of the sysctl module

* Added in support for freebsd-style sysctl commands
* Replaced some functionality that was provided by module_common
* Simplified some logic in a couple of places (ie, not checking
  a split with len() but instead limiting the split to 1)

Fixes #3380
Merge branch 'fix_changed_for_yum_group' of https://github.com/hnakamur/ansible into hnakamur-fix_changed_for_yum_group
When checking conditionals, don't dereference when the variable contains dashes

Fixes #4104
Update releases.txt
Update 1.4 specfile -- no need for node fireball package, release dates
Update Debian changelog for 1.4 builds.
Adding sshpass as packaging requirement and fixing VERSION
Update CONTRIBUTING.md
Update CONTRIBUTING.md

Add URLs to mailing lists instead so it's obvious on how to subscribe
Update CONTRIBUTING.md

Github formatting fixups
Update CONTRIBUTING.md

URL formatting
Update CONTRIBUTING.md

Convert URLs to short form hyperlinks
Update CONTRIBUTING.md

word wrap and formatting
Update CONTRIBUTING.md

formatting, add twitter link
Update README.md
Update CONTRIBUTING.md
Update CONTRIBUTING.md

edit doc some more, remove line break
Update CONTRIBUTING.md