Remove generated files from CVS.
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This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
====================
Some initial obvious cleanup. Removed all the sections on Digital UNIX,
changed IBM AFS to OpenAFS throughout, and reformatted and cleaned up the
front matter and some of the first few pages.
Add some comments to the makefile, set up dependencies to build the index
automatically, remove a bunch of unnecessary @-signs in front of commands,
and add a clean target.
