Yet another update. Two things:
1. updated note about "content-repository-content-files" directory
which is now included in the "acs-core" CVS alias, so it does not
have to be created manually.
2. added information about the new "attachments" package which is
currently used by "forums" and "calendar". Exising installations of "forums" and "calendar" will not break without this package, but attachments funcationality will not be available.
