Test case and fix for shlex.split unicode bug

Enable virt module to work with different libvirt connection uris.

Enable virt module to work with different libvirt connection uris. This allow to work with all libvirt supported VMs.

Add separate step update_cache example

Change the retry logic to write a limit file, able to source limit from files by indicating with @filename

When operating on a unicode string in python 2.6, shlex.split returns
a result that does not work with the file constructor.

To reproduce this requires a task include that is templated (this is
because the templated string is a unicode result, whereas a non-
templated string is a non-unicode string)

    [will@centos6.3] $ python
    Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23)
    [GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import shlex
    >>> shlex.split(u'abc')
    ['a\x00\x00\x00b\x00\x00\x00c\x00\x00\x00']

    [will@fedora17] $ python
    Python 2.7.3 (default, Jul 24 2012, 10:05:38)
    [GCC 4.7.0 20120507 (Red Hat 4.7.0-5)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import shlex
    >>> shlex.split(u'abc')
    ['abc']

The proposed fix (coercing the include parameters to string before the
shlex.split) may not be ideal but it does fix the bug for my test case.

When playbooks fail, attempt to create an inventory file in the inventory directory that allows rerunning
of the playbook against only the hosts that failed.

when: condition support for tasks include

of "-" to be less visually heavy (unless cowsay is installed of course)

file.

Makes $PIPE and $FILE macros accept utf-8 input

update web address

update my email address

Much requested feature -- allows relative imports of content within roles or relative to any task or handler include (../templates for template ../files for copy)

repeat template calls at playbook intialization time.

templating.

Fix for inventory scripts with no path prefix that are in CWD.

Without this, using '-i ec2.py' will not work if '.' is not in PATH.

Upgraded variable support met with upgraded conditional support, see examples/playbooks/upgraded_vars.yml
for details!

correct.

New try: s3 overwrite and checksum support

adds private_ip param to ec2 module