Fix issue #227

Unify normal and sudo remote exeuction.

Commit SHA: 87b1cf45 that put temp files in `$HOME/.ansible` instead of `/home/<user>/.ansible` was producing a directory literally called `$HOME` (no expansion) with non-sudo remote execution.  I'll take the blame for this one, as `ParamikoConnection.exec_command()` was not using the shell for non-sudo commands.  This does sudo and non-sudo execution the same way, using the shell, so environment variables should get expanded.

Older versions of selinux, such as that deployed on rhel5, only return a
context of user:role:type instead of user:role:type:level.  This detects
whether the tuple has three elements (old-style) or four.  If the
old-style, it keeps the secontext list at three elements.

fix for issue #230 - handle template taking 3  args

Bugfix for issue #229

Use the $HOME env var instead of hard coding /home/<username>

Support YAML list of hosts in playbook.

Reading the docs, I was a bit confused as to how to specify multiple hosts/groups in a playbook.  Being YAML, I assumed a normal YAML list would work:

    ---
    - hosts: [host1, host2]

But this crashes when inventory._matches() assumes hosts is a string.  This patch just checks if hosts is a list, and turns it into a string joined by ';'.

runner._chain_file_module() calls .get() on error string

runner._return_from_module() normally returns a list (?) of `[str,bool,dict,str]`, but on error it returns `[str,bool,str,str]`.  runner._chain_file_module() then tries to call .get() on the third item (`data2`), which fails when it's a string.  This patch only accesses `data2` if the return value was `ok`.  It might be better to return consistent types in both cases, but I'm not sure where/how else the return value is used.

handle issues when the hostlist is inadvertently set executable

* 'devel' of git://github.com/ansible/ansible: (2 commits)
  Fix tests for facter and the ansible_facts API.
  ...

Ohai and facter modules should not use the ansible_facts API.

and/or executing it fails. This produces a nicer error message than
a traceback

Expand user in ssh identity file

Fix incorrect merge of custom-facts branch.

This fixes #216.

bugfix for ssh_config patch

Conflicts:
	lib/ansible/runner.py

changelogs yet since this isn't released yet (but 0.3 is)