message: Add logic to do nothing when maxAge() == 0
diff: @@ -261,6 +261,14 @@ void Structure::incrementAge()
  {
  activate();
  }
  + else if (maxAge() == 0)
  + {
  + /**
  + * Structures defined with a max age of '0' are 'ageless'
  + * and should continue to operate regardless of how old
  + * they are (for example, the Command Center).
  + */
  + }
  else if (age() == maxAge())
  {
  destroy();
  