It used to just ignore the beta information, but that wasn't quite right.
This does means that the library details will still have information about
the beta version after a release, which isn't desirable, but it
shouldn't be too hard to write something to strip out old beta
information.
PHP 5.4 uses UTF-8 by default, but PHP 5.3 uses ISO-8859-1 so character
encoding is going wrong there. So replace htmlentities with a function
that uses the correct encoding.