update to saio documentation

Change-Id: I992f97544ef356432deebe5900426a2041c7a40e
first pass

Change-Id: Ie750cf0aa7e6156ffa3239dc1f2136aa40e92787
second pass at saio docs

Change-Id: I828df5879e92a6ab96ce037c8824498c77d9f130
/etc/swift/swift.conf must be individually created

Change-Id: I24f809820fd403fbc46201c366b4ba020e885962
Restore Fedora in SAIO

This is a minimum change. Fortunately we are all Linux and thus
are rather similar.

Also, fix a consistency problem with /var/cache/swiftN where
recon drops caches.
add ~/bin/stopall, allow passthru of parameters from .probetests to nosetests

Change-Id: I2163e0638531ef0ddebb30da9baf9103371210ad