Make default irc color none; add color none
Make vars plugins honor `hash_behaviour` setting.

When applying precedence ordering of different classes of vars
(hostvars, groupvars, role-defaults, etc.), the hash_behaviour
setting controls whether duplicate hash keys are replaced in
entirety, or merged together.

The wording of the documentation suggests that this setting applies
to all levels of the precedence ordering, when it currently does not:

> Ansible by default will override variables in specific precedence orders,
> as described in Variables. When a variable of higher precedence wins,
> it will replace the other value. ... Some users prefer that variables that
> are hashes (aka ‘dictionaries’ in Python terms) are merged together. This
> setting is called ‘merge’.

This change causes the hash_behavior setting to extend to vars plugins.
Add typetalk notification module
adding the ability to change redis configuration
Added AWS modules ec2_scaling_policy and ec2_metricalarm for configuring scaling policies for autoscaling groups, and metric alarms.
docker: add tty and stdin_open options

Useful for development environments.  Setting these options to true
allows you to `docker attach` to a docker container started with
ansible.
fixed issue with directory permissions on copy #6552
Fix logic in process_common_errors for unbalanced quotes
Merge pull request #6571 from bcoca/file_fixes_copydir

fixed issue with directory permissions on copy
Making the error messages for bad key/dir permissions more understandable

Fixes #6254
Fixes #6582 Re-add regex to ignore untracked files that were never tracked
Addresses #6579 Disallow vault passwords with newline characters by stripping them in utils
Addresses #6579 Only strip vault passwords if given
Prevent rewriting the encrypted file if decryption fails
Correct overly broad import from chube in linode inventory script

Fixes #4875
Merge pull request #5443 from nirvinehh/devel

irc module: Make default irc color none; add color none
Add note about IRC library default change.
Merge branch 'devel' of git://github.com/tksmd/ansible into devel
Add notes about new notification module.
Merge pull request #6540 from Zeekin/devel

Add cloud modules ec2_scaling_policy and ec2_metricalarm