cherry picked from https://github.com/ansible/ansible/pull/6899

better missing editor message

support for patch module to have master as src

* delegate_to rudimentary support (still needs much more work)
* lots of other things

Fixes #10157

Helps control open file descriptor count with pypy (which is used with
one coreos + ansible example).  Part of a fix for
https://github.com/ansible/ansible/issues/10157

Obfuscate passwords in a variety of output

Ignore errors from `shutil.rmtree` when removing temporary directory

Update playbooks_delegation.rst

Make collins attributes more accessible

Reformat and clarify YAML syntax descriptions

Use termios instead of stty for compatibility

There's a space missing "hosts:127.0.0.1" should be "hosts: 127.0.0.1"

fixes #10182

Fixing ticket 9845: man pages contain duplicate AUTHOR section

correct typo that breaks hashing on python 2.4.

Handle PowerShell parameters passed via splatting

more resilient errors for bad host declarations in play

should fix #10148

Allow retries to be templatable

The rules are -- if the filter returns str type and the str may contain
non-ascii characters then wrap it to convert to unicode type.  Not
needed if the function already returns unicode type or only returns
ascii characters

remove broken nad commented unicode conversion -- in v2, this is done when the data first enters ansible.