Key filtering moved before returning results

Changed code so key doesn't get reassigned in loop
Made use of filtr variable

Added examples covering all available globs
Added a use case of filtering only facts returned by facter

Added an example on how to filter keys returned by the module.

Adds facts filtering using fnmatch, via the 'filter' option.

Usage:
ansible -m setup -a 'filter=ansible_*_mb'

Fixes #2017.

mail module: properly set charset

sysctl module: fixed issue when checks_after fail on comparing keys with...

sysctl module: fixed issue when checks_after fail on comparing keys with values separated by white strings

sysctl module: fixed issue when checks_after fail on comparing keys with values separated by white strings

postgresql_user: Add support for PUBLIC

This change enables users to add and remove permissions to all roles,
using the PUBLIC user. This is equivalent to using the PUBLIC keyword
in GRANT and DENY postgres SQL commands.

For example, see: <http://www.postgresql.org/docs/current/interactive/sql-grant.html>

Fixes #1833

uri module doc fixes

Fixed remove_key

Correct ec2_vol doc errors

zfs: documentation no longer breaks the formatting in webdocs

Fixing syntax error

running install_lib
byte-compiling /usr/lib/python2.6/site-packages/ansible/runner/action_plugins/add_host.py to add_host.pyc
SyntaxError: ('invalid syntax', ('/usr/lib/python2.6/site-packages/ansible/runner/action_plugins/add_host.py', 37, 92, '    def run(self, conn, tmp, module_name, module_args, inject, complex_args=None, **kwargs)\n'))

Fixes #1711.