Merge branch 'aix-fixes' of git://github.com/dagwieers/ansible into devel

Conflicts:
	library/setup

Tweak formatting.
Merge pull request #2084 from johanwiren/zfs

Added zfs module
Merge pull request #2086 from lwade/devel

Adding a simple EC2 volume module for creation and attach
Merge pull request #2101 from stoned/plugins-connections-doc

pasto and core connection plugins reference fix
Update changelog
add user to who uses page
Add video link to docsite
Slight doc tweak
update some of many copyright dates but we can just do this when editing each file, not super high priority
update manpage for new options.
Add versionadded element to new option, fix YAML formatting
Better explain magic variables
Update releases link on getting started page.
Updating links to useful articles
Clean up the installation section and mention pip.
Rough cut at adding a glossary section.  This could definitely use some improvements, proof reading, and lots of cross linking.
Hate to do this, but URI module docs were constructing messed up RST files, so removing examples for now.  Will ask someone to work on them.
add the ability to take variables in the add_host module, and be willing to parse a host:port hostname handed to add_host
Merge pull request #2104 from robparrott/devel

add_host changes to allow vars
Allow add_host to add hosts to multiple groups, groups is now an alias for groupname.