miniupnpd/pf/pfpinhole.c: use label to store pinhole description
Internal address check is mandatory even if third party option is set.
Merge pull request #73 from fingon/pcp-int-check-mandatory-always

Internal address check is mandatory even if third party option is set.
miniupnpd: Retreive PCP packed IPV6 destination address
miniupnpd/asyncsendto.c: allow setting of source address (IPV6_PKTINFO)
miniupnpc: add more info to python packages
=> 2014