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.
Update documentation about Jinja2 expressions in playbooks
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
Corrected example for lineinfile due to ': ' on line

Closes #3992
Merge pull request #4040 from ngrilly/devel

Update documentation about Jinja2 expressions in playbooks
Change hostvars to a mutable mapping to more closely resemble a dict

Fixes #4030
Merge branch 'rdsfixes' of https://github.com/jamespharaoh/ansible into jamespharaoh-rdsfixes
Merge branch 'aix_wpar_facts' of https://github.com/mplonka/ansible into mplonka-aix_wpar_facts