* win_become: move error handling to Ansible outside of shell
* trimmed the output so double newlines don't get set
* added test for non-zero exit code
* missed issue URL on test
* changed exit to SetShouldExit
* once smoketest is implemented in CI, will run a much smaller set of Windows module integration tests for changes to module_utils or connection subsystems
* fixes become_method: runas for unprivileged users
* sets permissions on tempdir appropriately
* allows automatic system environment generation for new token (old Process.Start way prevents this)
* add basic become runas tests
