MySQL variables module
mysql_replication module added
Changes made in documentation (EXAMPLES section added)
Minor identation fixes
EXAMPLES section added
Skipping facts not available on AIX WPARs
Fix bug in uri where redirect check fails.

When the redirect check fails, the 'status' key is not set in
resp_redir, so we need to check this.
Adding documentation for role default variables
fix for rds region variable
make rds handle vpc security groups properly
fix debian release version
fix get_db_info

using pg_roles instead of pg_user
if database owner is a role (not user) then it can not select form pg_user table.
Ensure ports are set correctly in accelerate module
Don't force accelerate connection for local actions.
When putting a file in accelerated mode, make sure it's chowned correctly
Always run the accelerate module as the user specified in the play

Currently, the accelerate daemon will be run as the sudo_user if
specified, which is incorrect.
Update documentation about Jinja2 expressions in playbooks
Check for an empty executable passed into the accelerate plugin

This was breaking at least the script module, so it would seem best
to check for it and set it to the default executable value
Module postgresql_privs: fix default arguments

Defaults arguments must not be added to the connection keywords, as
the other postgresql modules already do.

Closes #4043
Move check for accelerate mode deeper to account for ansible_connection

Fixes #4045
Merge pull request #3975 from jimi1283/role_defaults_docs

Adding documentation for role default variables