JhlClientAdapter's output to console if library is missing

Hello,

I think the console output of JhlClientAdapter if the required libs are
not available is a good improvement because you can see if one of the
libraries is missing and most notably you now which one of the libs is
not there.

But sometimes you don't want to have any output to the console or want
to redirect the output. For instance JavaSVN calls the
JhlClientAdapterFactory.setup() and if the javahl libs are missing, the
warning messages are printed to the console. But in that case, it's very
confusing to see warnings about javahl although you're using JavaSVN
(perhaps you know that javahl is not available and because of that you
use JavaSVN). See: http://tmate.org/tracker/view.php?id=127

I think it would be a desirable enhancement if you can redirect these
messages in some way. What do you think about this?

Regards,
Martin