The doc/txt directory has become the de facto home for text-based
technical notes. Relocate the contents of the doc/arch directory to
doc/txt. Relocate doc/examples to doc/txt/examples.
Update the doc/README file to be more current and remove old work in
progress comments.
Change-Id: Iaa53e77eb1f7019d22af8380fa147305ac79d055
Reviewed-on: https://gerrit.openafs.org/12675
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
