Side by side rendering

- Side by side rendering implemented throughout the graphics pipeline.
- New GuiTSCtrl renderStyle property is set to "stereo side by side" to
activate.
- You set an IDisplayDevice on the GameConnection to define any vertical
FOV, projection offset, and stereo eye offset properties required for
the stereo rendering (no display device included with this commit).
- Full and Empty templates updated with correct scripts and shaders.

Engine/source/T3D/gameBase/gameConnection.cpp

@@ -219,6 +219,7 @@ GameConnection::GameConnection()
    // first person
    mFirstPerson = true;
    mUpdateFirstPerson = false;
+   clearDisplayDevice();
 }
 
 GameConnection::~GameConnection()
@@ -1729,6 +1730,13 @@ DefineEngineMethod( GameConnection, setControlObject, bool, (GameBase* ctrlObj),
    return true;
 }
 
+DefineEngineMethod( GameConnection, clearDisplayDevice, void, (),,
+   "@brief Clear any display device.\n\n"
+   "A display device may define a number of properties that are used during rendering.\n\n")
+{
+   object->clearDisplayDevice();
+}
+
 DefineEngineMethod( GameConnection, getControlObject, GameBase*, (),,
    "@brief On the server, returns the object that the client is controlling."
    "By default the control object is an instance of the Player class, but can also be an instance "