Fixes for postgresql_user to make it work with postgresql defaults and under Python 2.4

Syntax changes necessary to make test-module work with Python 2.4

Return both stdout and stderr on pip failures.

pip failure message sometimes (always?) go to standard out. Return
both standard out and standard error when there's a failure.

to parse or return other valid output.  This is a slight improvement.

If ANSIBLE_KEEP_REMOTE_FILES=1 is set as an environment file, remote files will not be deleted, which is useful only for development debugging purposes.

Fully document the -v option.

Feature/882 interfaces

If there is an error in how interfaces are configured (or only one set, like IPv6),
the setup command should not error out.

being run against for each playbook

Make easy_install module actually work.

mpdehaan requested in ansible/ansible#795 that globals be removed.
The response was to remove the lines with the word 'global', but not
the actual use of global variables.  Which makes the module break silently.
Updated to use local variables.

setup: add type and default_ipv{4,6} to linux network facts

Add some docs/examples

Changes to postgresql to support defaults settings and older psycopg2

When initalizing a connection to psycopg2, in order to use the default
values, the keywords must be missing. So we use a dictionary as a kwarg
and include only the keywords that do not have an empty value on the
module parameters.

include local_nvra
change the remove behavior to pretty much NEVEr error out if the pkg is not there (or anywhere)

it is possible those folks w/o yum-utils installed but with rhn-plugin
installed but w/o any rhn-certificates will still see an error msg.
they have 3 options:
1. remove rhn-plugin
2. enable some channels w/rhn certs
3. install yum-utils

Add a basic ansible-pull man page.

Add the example playbooks/scripts to the RPM package.

Closes #841

Fix spelling of architecture for non-x86

Always load group_vars and host_vars.

Further fixes for constants following config introduction