Merge branch 'subelements' of https://github.com/sergevanginderachter/ansible into sergevanginderachter-subelements

Conflicts:
	lib/ansible/runner/connection_plugins/accelerate.py

Fixes #4111

- use egrep patterns to detect BSDs in one ifeq
- use seconds-since-epoch as input for BSD date (-r option)
- get seconds-since-epoch from git log with "%at" format string

Add some more OpenBSD facts

Expand tilde in paths in file module

Locate easy_install path after (optionally) creating virtualenv.

added:
 * ansible_distribution
 * ansible_distribution_release
 * ansible_distribution_version

edit doc some more, remove line break

formatting, add twitter link

word wrap and formatting

Convert URLs to short form hyperlinks

URL formatting

Github formatting fixups

Add URLs to mailing lists instead so it's obvious on how to subscribe

Fixes #4104

Packages which are half-installed are not adequately represented by
the .is_installed field of the apt.package.Package object. By using the
lower-level apt_pkg.Package object (which provides the .current_state
field), we can check for a partially-installed state more accurately.

Fixes #3421

Merge branch 'fix_changed_for_yum_group' of https://github.com/hnakamur/ansible into hnakamur-fix_changed_for_yum_group

* 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

Fixes #3931

Fixes #3615
Fixes #3572

Also slight modification to the error message in the earlier commit that
modified the update-rc.d detection portion of the code

Fixes #3474