[HDRI] New site offering HDRI spherical panoramas

[Greg Ward]

A friend of ours on the mailing list, Lisa Yimm, informed me of a  
website she started for rendering folks in search of high-quality HDR  
panoramas to use for image-based lighting:

	http://hdrvfx.com

There seem to be some really nice scenes in there.

Meanwhile, I'm busy at work on a new panorama stitching feature for  
standard and HDR images in Photosphere.  Look for that in the next  
week or two.  Unfortunately, it won't be able to create full  
spherical panos like the one on Lisa's site, due to the warping and  
stretching that would require.

-Greg