improve output formating for playbook

Also be smart and don't run a play at all if no tasks in the play match any of the tags specified.  This includes not running the setup actions!

Removed boolean parameter setting from user module.

fixes #569 apt module problems on old versions of apt-python 

Added yes/no to user options instead of False comparison for force and remove options for user module

Added cmd modifications to use a force-yes option for apt module

Group module fixes

Minor tweak to user module

Takes a lot of the fixes to the user module and applies them to the
group module: provide stdout/stderr in result if available and call
fail_json() if the attempted action fails.

User modules fixes

Added additional output to service status checker

modify user module so that password is NEVER logged before the command runs

The user module now returns the output, both stdout and stderr, from
useradd, usermod, and userdel.  This should help debug cases why one of
those commands fail.  In addition, the user module will now call
fail_json() when the attempted command failed so as to properly
communicate a failure in a playbook.

Use iterative MD5 hashing.

Conflicts:
	lib/ansible/utils.py

This reverts commit 865796c3687cc06920ddf29890de991287dc50f6.

(Superseeded by next commit)

Switch to using hashlib or md5

Allows for efficient transfer of large files.  Templates do not sample first because they are small.

apt module to support --no-install-recommends