FxSunlight fix

FxSunlight is broken in the latest TGEA release... in particular it was first a culling issue then it had diry texture states.

In about line 1811 of fxSunlight.cpp change this...

// Render
   // -------------------------------------------------------------------------
   GFX->setBaseRenderState();
   
   // Setup Alpha
   GFX->setAlphaTestEnable( true );

... to this...

// Render
   // -------------------------------------------------------------------------
   GFX->pushState();
   
   // Setup the base state.
   GFX->setCullMode( GFXCullNone );
   GFX->disableShaders();
   GFX->setLightingEnable( false );
   
   // Disable the unused texture stages... hacky
   // we need a helper function for reseting the 
   // texture stages.
   GFX->setTexture(1, NULL );
   GFX->setTextureStageColorOp( 1, GFXTOPDisable );
   GFX->setTextureStageAlphaOp( 1, GFXTOPDisable );
   GFX->setTexture(2, NULL );
   GFX->setTextureStageColorOp( 2, GFXTOPDisable );
   GFX->setTextureStageAlphaOp( 2, GFXTOPDisable );
   GFX->setTexture(3, NULL );
   GFX->setTextureStageColorOp( 3, GFXTOPDisable );
   GFX->setTextureStageAlphaOp( 3, GFXTOPDisable );
   
   // Setup Alpha
   GFX->setAlphaTestEnable( true );

Then at the end of that function change this...

PrimBuild::end();
   
   // Exit
   GFX->setZWriteEnable( true );
   GFX->setZEnable( true );
   GFX->setAlphaTestEnable( false );
   GFX->setBaseRenderState();
}

... to this...

PrimBuild::end();
   
   // Exit
   GFX->popState();
}

That fixes it... although i have to say that fxSunlight doesn't cause the specular type reflection on the water like it probably should, but that's a new feature for another time.