bug#9948
  changed client-charset behavior in 4.1.x libmysql, which issue BC prob
  after review fixes


sql/mysql_priv.h:
  bug#9948
  changed client-charset behavior in 4.1.x libmysql, which issue BC prob
  after review fixes
sql/mysqld.cc:
  bug#9948
  changed client-charset behavior in 4.1.x libmysql, which issue BC prob
  after review fixes