Reverse depth & 32F buffer format

-Adds reversed depth projection model, dramatically increasing depth buffer effective resolution.
-Adds 32F depth 8U stencil format GFXFormatD32FS8X24 (following DX naming conventions). Note this is a 64-bit format, and likely not suitable for mobile platforms. Revert to GFXFormatD24S8 in renderManager.tscript for mobile & "ancient" platforms.
-Corrects alignment of texture type details array.

Engine/source/T3D/lightFlareData.cpp

@@ -455,7 +455,7 @@ void LightFlareData::prepRender(SceneRenderState *state, LightFlareState *flareS
    lightPosSS *= oneOverViewportExtent;
    lightPosSS = (lightPosSS * 2.0f) - Point3F::One;
    lightPosSS.y = -lightPosSS.y;
-   lightPosSS.z = 0.0f;
+   lightPosSS.z = 1.0f;
 
    // Determine the center of the current projection so we can converge there
    Point3F centerProj(0);