Removed the DevIL backend from love.image. Replaced it with PNG and JPEG encoders/decoders via LodePNG, zlib, and libjpeg-turbo.

PNG and JPEG are now the only two supported image formats, aside from compressed DDS (DXT, etc.)

--HG--
branch : minor

src/modules/image/magpie/ImageData.h

@@ -59,6 +59,10 @@ private:
 	// Image format handlers we can use for decoding and encoding.
 	std::list<FormatHandler *> formatHandlers;
 
+	// The format handler that was used to decode the ImageData. We need to know
+	// this so we can properly delete memory allocated by the decoder.
+	FormatHandler *decodeHandler;
+
 }; // ImageData
 
 } // magpie