Initial refactor of the file module
Initial refactor of the file module

* Separate the logic for each state into separate functions
* Start the process of separating out initialization (pre-processing of
  parameters that cannot be done via arg spec) from the logic to
  implement each state.
* Start the process of raising exceptions for errors and returning
  result values from each state implementing function   Goal is for all
  fail_json's to be consolidated into exception handlers at the toplevel
  and for there to be only one exit_json() at the toplevel.

thaim/ansible,thaim/ansible