Python 3: basestring in play_context.py

Fixes #12418

Documentation for retry_files_enabled and retry_files_save_path

Add a travis test for urlopen usage

Python 3: two more instances of 'basestring'

Enable winrm put_file to upload an empty file.

Add PowerShell exception handling and turn on strict mode.

Fix spelling

Support additional options for WinRM connections via inventory variables

Remove ansible_winrm_ host/port/user/pass options, update exception handling around establishing a winrm connection.

Pass windows command as-is without splitting/rejoining parameters.

* Fixes extra spaces added between parameters from https://github.com/ansible/ansible-modules-core/issues/1929
* Correctly decode PowerShell command encoded as UTF-16-LE so that it displays correctly in debug messages, fixes the other issue from https://github.com/ansible/ansible-modules-core/issues/1929
* Add test to verify that script parameters are passed as-is, so $true is interpreted as a boolean, fixes https://github.com/ansible/ansible/issues/10947

Add integration tests for win_group module.

Add tests for creates parameter to win_msi module.

Fixing a small typo

Fix mutable default argument

Just adding a missing letter.

Fix fetch to not fail for missing file when fail_if_missing=False

Added env_string in async_cmd

Small change so the YAML renders as code.

Wrong column named

Merge branch 'topic/crash_empty_inventory' of https://github.com/quinot/ansible into quinot-topic/crash_empty_inventory

Set PlayContext.timeout from the value specified by -T on the command-line

Fixes #12395

Create 'all' even if host_list is empty, as this group needs to exist
when creating the implicit 'localhost' host.

Fixes #12391

Fixes #12372