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/gfx/D3D11/gfxD3D11EnumTranslate.cpp

@@ -73,6 +73,7 @@ void GFXD3D11EnumTranslate::init()
    GFXD3D11TextureFormat[GFXFormatD24S8] = DXGI_FORMAT_D24_UNORM_S8_UINT;
    GFXD3D11TextureFormat[GFXFormatD24FS8] = DXGI_FORMAT_UNKNOWN;
    GFXD3D11TextureFormat[GFXFormatD16] = DXGI_FORMAT_D16_UNORM;
+   GFXD3D11TextureFormat[GFXFormatD32FS8X24] = DXGI_FORMAT_D32_FLOAT_S8X24_UINT;
    //sRGB
    GFXD3D11TextureFormat[GFXFormatR8G8B8A8_SRGB] = DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
    GFXD3D11TextureFormat[GFXFormatR8G8B8_SRGB] = DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;

Engine/source/gfx/D3D11/gfxD3D11TextureManager.cpp

@@ -173,7 +173,12 @@ void GFXD3D11TextureManager::_innerCreateTexture( GFXD3D11TextureObject *retTex,
 			desc.CPUAccessFlags = cpuFlags;
 			//depth stencil must be a typeless format if it is bound on render target and shader resource simultaneously
 			// we'll send the real format for the creation of the views
+			if (format == GFXFormatD24S8)
+         {
 			desc.Format =  DXGI_FORMAT_R24G8_TYPELESS; 
+         }
+         else // Note: right now only GFXFormatD24S8 and GFXFormatD32FS8U24 are supported. Additional cases required to support 16-bit depth for mobile.
+			   desc.Format = DXGI_FORMAT_R32G8X24_TYPELESS;
 			desc.MipLevels = numMipLevels;
 			desc.SampleDesc.Count = antialiasLevel;
 			desc.SampleDesc.Quality = numQualityLevels;