spaces in URI

[cgarver]

Thanks Matthieu.  I've applied your patch, but unfortunately the
behaviour remains the same.

This format of link doesn't work.  It reports a badly formed request:
http://www.xxxxx.xxx/us/storage/113/images/Member%20Images/image-2-web.png

But this better formatted URI does:
http://www.xxxx.xxx/us/storage/113/images/blog/child-eating-health-food.jpg

While it'd be nice to eliminate all white space from the source URI, I
do not have control over the source file structure/system.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,97031,135016#msg-135016