Added commandline support for alternate location of pcurses.conf file

Working and testing new features like the new %filter_clear requires you to modify the pcurses.conf file with new experimantal options that will not work with the stable version of pcurses (the one I use to install pkgs and keep my system updates.

This patch will add commandline support for alternate location of pcurses.conf file

pcurses -f somelocation.conf

/Uffe