Document static groups of dynamic groups

Document how to create static groups with dynamic child groups
Teach env-setup how to create egg-info for ansible so that pkg_resources works
Restore the pkg_resources calls so that we pull in the correct pycrypto on RHEL6
Remove unused if/else clause, since it doesn't change anything
Fix grammar in password
Update playbooks_roles.rst

Fixes https://github.com/ansible/ansible/issues/7241
Add integration tests for the win_feature module.
Removing hard coded link and replacing with reference
Documents the --step and --start-at options to ansible-playbook. Fixes #9041.
Documentation typo: ansible-module[s]-extras

Typo: ansible-module-extras -> ansible-modules-extras in a link to this
repository.
Fix bug in plugin path caching

Fixes #9263
Small fix for issue #9275
added new 'shuffle' filter
Template play vars after reading them

Fixes #9242
Revert "atfork import warning should be suppressed when system_warnings = False"

This reverts commit a175168686abedaad88051aedc2dab3d164ba792.
WIP on data structure processing patterns.
Add submodule references since v2 development will need them, the tree obviously does
not need two copies.
Work in progress on task loading.
Attribute defaults and optional accessors.
Attempt to clean up the munging functions a little.