fix #1595 about batch mode detection problem for postgresql with non standard install dir
fix #1595 about batch mode detection problem for postgresql with non standard install dir

rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula,rkorzeniewski/bacula