YAML update request handler

[Doug Steigerwald]

A few months back I wrote a YAML update request handler to see if we could post documents faster 
than with XMl.  We did see some small speed improvements (didn't write down the numbers), but the 
hacked together code was probably making it slower as well.  Not sure if there are faster YAML 
libraries out there either.

We're not actually using it, since it was just a small proof of concept type of project, but is this 
anything people might be interested in?

--
Doug Steigerwald