* win_exec: refactor PS exec runner
* more changes for PSCore compatibility
* made some changes based on the recent review
* split up module exec scripts for smaller payload
* removed C# module support to focus on just error msg improvement
* cleaned up c# test classifier code
* Add Ansible.ModuleUtils.PrivilegeUtil and converted code to use it
* Changed namespace and class to be a better standard and fixed some typos
* Changes from review
* changes to avoid out of bound mem of server 2008
* changes to detect failure when setting a privileged not allowed
* tolerate windows line endings when loading windows module utils. Helpful for old custom windows modules.
* add test modules to demonstrate win line ending module load behaviour.
* attempt to fix sanity check failures
* pep8 fix
* explict skip of test modules from shebang check (core modules must still have expected unix style line endings)
* switch to rstrip() following core team meeting feedback
* Admin account is not always called Administrator (eg Azure)
* this fixes some, but not all issues related to the Administrator account on non-English Windows as well (still numerous references to "Administrators" and other en-US Windows group names)
