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

Added an ANSIBLE_CONFIG variable to poteentially override
~/.ansible.cfg
Used os.path.expanduser against all paths that might be read in to allow
~ to be used in config files. I'd have preferred it if os.path.expanduser
took None as an argument but it doesn't.

If remote_port *is* set in the ansible config file, then it will be
interpreted as a string (at which point ssh.connect fails with an
obscure message). Most other numeric variables are handled by
the OptionsParser which takes a type variable when setting up the option -
but remote_port is not an option, so never cast to int.

It might be worth adding a type field to get_config that defaults to a string.
That could be e.g. file or int, which then casts it correctly.

Bugfix/apt repository

fixed missing module argument for mount module

Use Python 2.4 compatible syntax