Add a couple comments on sizing flash recovery.
Error messages go to stderr.
Zap yml that was used for Oracle appliance.

I'm not using the appliance anymore, so I'm not using this yaml, and it won't
be maintained.  Focus on Oracle Linux 5 with Oracle Express.
Zap unused Ansible variables.
Zap commented-out code.
Zap unused Ansible templates and their vars.

Leave the oractx stuff for now, even though it is commented out, as I don't
have search working yet.