network/pptp: Various fixes to the script.
network/pptp: Various fixes to the script.

Signed-off-by: Michiel van Wessem <e247640e3baaadbb043d49ec5378165c307079fa@gmail.com>

panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds