src/cavern.c: Drop "non-fatal" from the report of how many errors there were at the end of the run - it just confuses users - we won't even get here if there's a fatal error!
git-svn-id: file:///home/survex-svn/survex/branches/1.0@3696 4b37db11-9a0c-4f06-9ece-9ab7cdaee568
