parameter interaction: disable upnp if -proxy set
parameter interaction: disable upnp if -proxy set

This is a backport from upstream
https://github.com/bitcoin/bitcoin/commit/8c35b6f3be218101630101806300cfd75be23f58

MinuteManReserve/mmr-core,MinuteManReserve/mmr-core,syfares/Transfercoin,Infernoman/Transfercoin,transferdev/Transfercoin,aspaas/ion,MinuteManReserve/mmr-core,aspaas/ion,Infernoman/Transfercoin,aspaas/ion,MinuteManReserve/mmr-core,transferdev/Transfercoin,aspaas/ion,syfares/Transfercoin,transferdev/Transfercoin,transferdev/Transfercoin,Infernoman/Transfercoin,syfares/Transfercoin,aspaas/ion,MinuteManReserve/mmr-core,Infernoman/Transfercoin,syfares/Transfercoin,Infernoman/Transfercoin,transferdev/Transfercoin,Infernoman/Transfercoin,transferdev/Transfercoin,aspaas/ion,syfares/Transfercoin,syfares/Transfercoin