Search multiple paths for modules.

Minimal change to allow a list of paths (separated by the typical path
separator) to be searched in sequence for the named module.

Expand vars_files identically for lists and non-lists

Make 'fetch' test for local directories before creating.  Fixes issue #450

Introduce ansible_python_interpreter variable.

Allow variables in notify list

Expand $item for copy and fetch

This allows configuration of the correct python interpreter on the managed system.

More helpful message when ssh fails.

To allow plays using different user accounts in the same playbook to function, clear the setup cache
between plays.

This reverts commit 4ad1b57b.

Add BIOS information and fix VMware detection (supports both IDE and SCSI)

Get rid of mktemp dependency to support AIX

Properly template list of hosts in playbooks.

In playbooks, hosts can be a YAML list. We templated the list before
converting it to a semicolon-separated string, which actually templated its
repr. This converts to a string first. A basic unit test is included.

The function call has been renamed to better reflect what it does, and we
reduced the number of calls from two to one in case the remote user is not
root.

This patch also fixes a string concatenation in _copy_module() that
should use os.path.join()

This closes #436

Renamed module, fixed idempotency, removed debug param.

Fix for get_selinux_facts

Fix to make 0.5 hosts with failures not be included in future task executions

get_hosts() was treating [] (meaning complete restriction, no hosts allowed)
the same as None (meaning no restriction, all hosts allowed). Fixed logic.

This switches to using selinux library calls instead of parsing the
output of sestatus.  This fixes issue #428 where the output was slightly
different than expected on F17.  Tested against debian (non-selinux),
centos5, centos6, and fedora17.

Test for play.vars_files == None, avoiding nasty traceback.

Avoid traceback when vars file has no vars items. Could warn or fail instead.