[Dirvish] Wiki now editable with captcha

[Keith Lofstrom]

I upgraded the wiki to use a "captcha" for human authentication,
and it is writeable again.  If you are visually impaired and cannot
read the captcha, send your changes to me or another member of the
list and have them change it.

In the longer term, I may upgrade the list to TWiki, but the captcha
gets us back on line for now.   Captcha isn't perfect, but it should
slow down at least some of the bots so I can do something besides
clean up after them.

Keith

-- 
Keith Lofstrom          keithl at keithl.com         Voice (503)-520-1993
KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon"
Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan ICs