Fix templates for non root sudo_user

When using template module, if a restrictive umask is set, the
sudo_user won't be able to read the /tmp/ansible-dir/source file
after it is copied across following _transfer_str

I wonder if this behaviour shouldn't be abstracted somehow (as
this correction also happens after put_file in the copy module too)

Add support to removes control param

added support for custom port definition for postgresql_* modules

Add /proc/cmdline information to the default facts

Add support for RSA/DSA SSH host key detection in setup module for OS/X

Added to_yaml and from_yaml filters to Jinja environment.

	s/<8spaces>/<4spaces>/g

The use-case here is that based on information in the /proc/cmdline certain actions can be taken.

A practical example in our case is that we have a play at the end of the provisioning phase that reboots the system. Since we don't want to accidentally reboot a system (or restart the network) on a production machine, having a way to separate an Anaconda post-install (sshd in chroot) with a normal system is a good way to make that distinction.

    ---
    - name: reboot
      hosts: all
      tasks:
      - action: command init 6
        only_if: "not '${ansible_cmdline.BOOT_IMAGE}'.startswith('$')"

A practical problem here is the fact that we cannot simply check whether it is set or empty:

    ---
    - name: reboot
      hosts: all
      tasks:
      - action: command init 6
        only_if: "'${ansible_cmdline.BOOT_IMAGE}'"

If ansible_cmdline was a string, a simple only_if: "'${ansible_cmdline}'.find(' BOOT_IMAGE=')" was an option, but still not very "beautiful" :-/

This implementation uses shlex.split() and uses split(sep, maxsplit=1).

Execute action only if specified file using param removes exist (execute reverse control of creates).

Some usage eg.:

```yaml
- name: enable apache2 default websites
  action: command /usr/sbin/a2ensite $item
creates=/etc/apache2/sites-enabled/$item
  with_items:
    - default
    - default-ssl

- name: disable apache2 default websites
  action: command /usr/sbin/a2dissite $item
removes=/etc/apache2/sites-enabled/$item
  with_items:
    - default
    - default-ssl
```

Fixed a parsing HEAD problem, when ansible is checked out as a submodule

Use `get_bin_path` properly for supervisorctl module

Keep result pristine for ignore_errors