Added three new methods.

  Added two modules for obtaining and setting the default module of a
  Wintermute process and one for obtaining the call name of a Wintermute
  process.
Implemented logic for processName() method.
Added private heading for Application.

  Copied private definition out of Application and into separate heading.
  Implemented logic for managing the internal module.
Updated application.cpp

  Added logic to specify the act of process registeration by designation of
  the primary module as required by issue #6.