- Change 'answer_no' variable to simply 'no' (let your yes be yes, and
  your no be no)
- Improve do_you_want_me_to() to automatically provide relevant prompts
  based on the $arguments variable (ie.: 'yn')
- Further genericize invocation of action subroutines (from take_action)
  by variablizing tmp files when implied.
- Further standardize output.  Common output strings emitted by
  'take_action()' now, instead of by calling function.
- Rename variable 'just_fix_uid_gid_and_mode' to match the function that
  we actually invoke: 'set_ownership_and_permissions'
- Improve the 'take_action()' function
- Improve the 'install_file()' function