PR/333: Be more precise about counting the strength of a regex, by counting the
number of actual matching characters specified in them.
Fix mime entries that were attached to magic entries that did not yet
have descriptions.
PR/320: Issue a warning for mime types that are attached to magic entries
that don't yet have descriptions.
PR/319: Remove superfluous call to file_ascmagic_with_encoding. file_encoding
should have set looks_text correctly before, and file_ascmagic already calls
file_ascmagic_with_encoding if it needs to.
today's changes