Show actual protocol for listen_succeeded_alert and listen_failed_alert log messages.

Delete protocol mentioning from setListeningPort
Support selective reannounce with libtorrent 1.0
Fix piratebay search engine.
Remove isohunt search engine.
Merge pull request #1259 from Gelmir/proto

Show actual protocol for listen_*_alert
Merge pull request #1258 from Gelmir/selective_reannounce

Support selective reannounce with libtorrent 1.0
Correctly remove isohunt engine.