Enhanced the service state recognition in the service module

Create a Jinja2 environment allowing includes

Default to using a ControlMaster connection

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make Runner options conflict errors raise AnsibleErrors not traceback in...

add catch if -c ssh and -k are passed at the same time since the ssh connection type doesn't
support passwords

Add an ssh command wrapper transport

- 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

Iterative template

This allows variables to contain other variables.

Allow exclusion of hosts/groups

Fixed typo from results to result in _execute_raw method

md5sum on bsd

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.

Better error messaging in utils

When a command responds with json that is unparseable, dump that unpareseable response instead of swallowing it.

Issue471 - import hashlib to sidestep deprecation warnings

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

Conflicts:
	lib/ansible/runner/__init__.py

Add support for older version of python-apt

Most constants can be overriden with environment variables. 

Evaluate only_if early

Allow a variable in with_items

Assemble module

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.

Most constants can be overriden with environment variables. Reserved doing anything with the connection options for further review.