Short Description: Preparation for Qt4 GraphicsView-based Accounting Workspace
Bug Number: n/a
Release notes (y/n): no, not yet.
For Release Nums: 6.1

(1) New set of (Sim) CanvasIDs and (Q3GUI Workspace) "CanvasRefs"

(2) Preparation for removal of the old Qt3 Simulation Workspace classes.

(3) Coordination of SimObj graphics item position moves between the
 two Accounting workspaces (new and old).  NOTE: It's not important to 
 have that synchronization working as such -- because the old Qt3 
 Accounting workspace will be going away -- but this is just a way of 
 insuring that position update notifications from the Sim library are 
 being processed correctly.

------------------
Sim/CanvasDefs.hpp
Sim/CanvasDefs.cpp
Sim/SimWS.cpp
------------------

New CanvasID definitions:

  CanvasID_SIMULATION = 0  // Qt4 Graphics View [RW 5.1]
  CanvasID_ACCOUNTING = 1  // Qt4 Graphics View [RW 6.1]
  CanvasID_GEOSPATIAL = 2  // Qt4 Graphics View [RW 5.1]
  CanvasID_OLD_ACCT   = 3  // Qt3 Canvas View   [RW 5.1]

  REMOVED: CanvasID_OLD_SIM

  CanvasID_ACCOUNTING and CanvasID_OLD_ACCT share the same "geometry"
  (CanvasGeometry. Basically, graphics item positions): Geom_ACCOUNTING. 

-------------------
Q3GUI/Workspace.cpp
Q3GUI/Workspace.hpp
-------------------

New CanvasRef pointers:

  CanvasRef* _sim4CanRef;  // CanvasDefs::CanvasID_SIMULATION 
  CanvasRef* _acc4CanRef;  // CanvasDefs::CanvasID_ACCOUNTING  <<< NEW
  CanvasRef* _geo4CanRef;  // CanvasDefs::CanvasID_GEOSPATIAL 
  CanvasRef* _acc3CanRef;  // CanvasDefs::CanvasID_OLD_ACCT 

  REMOVED: CanvasRef* _sim3CanRef;  // CanvasDefs::CanvasID_OLD_SIM

Conditional Workspace Availability:

  static const bool SHOW_QT3_ACC_WORKSPACE (true);
  static const bool SHOW_QT4_ACC_WORKSPACE (false);

--------------
Sim/SimObj.cpp
--------------

Do generate OBJECT_MOVED_ACC callbacks from the setAccountingXY (and
related single-coordinate methods).

---------------------------
Q3GUI/IconItem.cpp
Q3GUI/IconItem.hpp
Q3GUI/SimObjRegionItem.cpp
Q3GUI/SimObjRegionItem.hpp
---------------------------

Simplified translation of vertical Accounting coordinate (Y): minor vertical
fudge terms removed.  Now there is only a vertical reversal. The significance
of this will be very short-lived, as this applies only to the "OLD" (Qt3)
Accounting Workspace -- but it simplifies the coordination of position 
updates between the (temporary) TWO Accounting workspaces (new and old).

--------------------------
Q3GUI/LocatorCanvas.cpp
Q3GUI/WorkspaceCanvas.cpp
Q3GUI/AccountingCanvas.cpp
QtUtils/SimObjGfxItem.cpp
QtUtils/WorkspaceGfxScene.cpp
--------------------------

Client mods for CanvasDefs changes.

--------------------------
Q3GUI/SimulationCanvas.cpp
Q3GUI/SimulationCanvas.hpp
--------------------------

Gutted, in preparation for removal.

--------------------
Q3GUI/LocatorDlg.cpp
--------------------

Minor: additional include required because of the "gutting" of the
Q3GUI/SimulationCanvas class files (in preparation for their removal).

---