Change the way we do with_items to make them happen next to each other in runner, which eliminates the problem of with_items and vars_files sometimes not playing  nice with each other.

(Also a fix for the user module error handling when the user
is not present at the time of the return.  This can only really be caused by multiple ansible executions).

Setup module no longer saves to disk, as templates are mostly useful in playbooks and this allows lots of simplifications
around file pathing and removes occasional permissions conflicts depending on how things are used.

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

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.

This reverts commit 865796c3687cc06920ddf29890de991287dc50f6.

(Superseeded by next commit)

Getting the apt module to accept and understand a 'install-recommends' parameter which allows running apt with --no-install-recommends

Fixes ansible/ansible#522, no longer creates comment in ~/.ssh/authorized_keys, does not create directory or file if state==absent.

Fixes ansible/ansible#523. Removed 'with:' blocks so module works with Python 2.4 for CentOS 5 support, courtesy of mcodd/ansible@29af24b73222c97e30f5843b67e321b95fb6c979.

Remove the -D module debug flag, which no longer is functional due to sudo pty requirements, and replace with -v/--verbose.

This flag will show playbook output from non-failing commands.  -v is also added to /usr/bin/ansible, but not  yet used.

I also gutted some internals code dealing with 'invocations' which allowed the callback to know what module invoked
it.  This is not something 0.5 does or needed, so callbacks have been simplified.

- Added Upstart support
- Added an initial unknown state
- Prevented state changes when the current state is not recognized
- Changed the keyword recognition to a safer method

Tested with OS X local connection and Linux remote. The paths to the
md5sum and md5 commands are hardcoded to the most common location. This
will definitely fail if the commands are elsewhere, or if the md5
command doesn't support the -q 'quiet' option.

Import hashlib if it is there, otherwise import md5.  Adds method
file_digest that wraps the logic on which module to invoke.

This adds a module that concatenates (ie. assembles) a file from
fragments in a directory in alphabetical order.  It chains the file
module afterward to fix up ownership and permission.  This also adds
tests for the assemble module with fragments in assemble.d.