Added cache_valid_time option to apt module
Updated apt module documentation string with a cache_valid_time explanation
Updated cache_valid_time option to check the update timestamp if update-notifier-common is installed.
mtime of the apt lists is used as fallback.
mkfs module to create filesystems with mkfs command
apt module cache_valid_time documentation fix
Squashed commit of the following:

commit c1f92093c8fa985c35d2fbcbb9171d82842983dd
Author: Ton Kersten <github@tonkersten.com>
Date:   Mon Apr 29 19:23:42 2013 +0200

    Fixed RPM building for 1.2
Fixed bug where if destination was unspecified, changed would not be set, resulting in an UnboundLocalError.
Slight tweak to set_fact variable documentation to clarify scope info.
Merge pull request #2809 from piffey/uri_fix

Fixed bug where if destination was unspecified, changed would not be set...
Merge pull request #2807 from tonk/devel

Fix the RPM building
Adding module to de-register/register EC2 instances

This module handles AWS EC2 ELB registration.

* De-registration requires the instance id which can be looked up using
  the ec2_facts module.
* Registration requires both the instance id and the elbs that the
  instance belongs to.

De-registration will return an ec2_elb fact that can be used for
registration in post_tasks.
ansible-doc: skip directories (new library/ format)
Updates Arch PKGBUILD

Recurse in subdirectories to handle the new libs layout.
Updated on AUR.
Merge pull request #2811 from jpmens/ansibledoc

ansible-doc: skip directories (new library/ format)
Merge pull request #2812 from leucos/patch-2

Updates Arch PKGBUILD
marking the state changed only when there are ELBs to work on
doc update
Test for the existance of a file that might not be present on older RHEL.
Set selinux context on file after shutil.move in atomic_move()

This is intended to fix #2810.  It sets the context of the tmp_dest file
after shutil.move() operation and before os.rename().  This should
retain the selinux context of the file across moves.
typo