New 0.19 release of DBIx::Log4perl

Recently I updated DBIx::Log4perl to handle DBI's clone method. This proved a little troublesome as clone is marked as "likely to change" and I'm not sure any other DBIx's have added clone. The problem I had was that clone does not call connect and all the code I had to add DBIX::Log4perl's attributes into the dbh was in connect. Eventually this was resolved by moving most of this code to the connected method which is called by clone. Unfortunately in doing this I broke the capturing and reporting of errors raised by DBI and 0.19 fixes this. Sorry to anyone this affected.