cuDNN 6.0 supported. Also speed of console example improved.

AlexeyAB

2017-08-02 bc810016a1f2eadf33a1ac800b64962a42f3d402

 src/stb_image_write.h

@@ -279,7 +279,7 @@
{
   unsigned char scanlineheader[4] = { 2, 2, 0, 0 };
   unsigned char rgbe[4];
   float linear[3];
   float linear[3] = {0};
   int x;

   scanlineheader[2] = (width&0xff00)>>8;