Libtorrent

* announce port=1 instead of port=0, when there is no listen port
* fix LSD over IPv6
* support TCP_NOTSENT_LOWAT on Linux
* fix correct interface binding of local service discovery multicast
* fix issue with knowing which interfaces to announce to trackers and DHT
* undeprecate settings_pack::dht_upload_rate_limit

* libtorrent 1.2.5 update (0f337b9ce7a1b0fc87f48843933b1c5c4dd5a9ec)
* New SettingsPack::dhtUploadRate(), SettingsPack::dhtUploadRate(int)
* lt:announce port=1 instead of port=0, when there is no listen port
* lt:fix LSD over IPv6
* lt:support TCP_NOTSENT_LOWAT on Linux
* lt:fix correct interface binding of local service discovery multicast
* lt:fix issue with knowing which interfaces to announce to trackers and DHT
* lt:undeprecate settings_pack::dht_upload_rate_limit

* fix binding TCP and UDP sockets to the same port, when specifying port 0
* fix announce_to_all_trackers and announce_to_all_tiers behavior
* fix suggest_read_cache setting
* back-off tracker hostname looksups resulting in NXDOMAIN
* lower SOCKS5 UDP keepalive timeout
* fix external IP voting for multi-homed DHT nodes
* deprecate broadcast_lsd setting. Just use multicast
* deprecate upnp_ignore_nonrouters setting
* don't attempt sending event=stopped if event=start never succeeded
* make sure &key= stays consistent between different source IPs (as mandated by BEP7)
* fix binding sockets to outgoing interface
* add new socks5_alert to trouble shoot SOCKS5 proxies

* libtorrent 1.2.4 update (ad83b1c0eb293b63c69f7879ca6ba2381369f77f)
* Java source compatibility upgraded from 1.7 to 1.8
* lt:fix binding TCP and UDP sockets to the same port, when specifying port 0
* lt:fix announce_to_all_trackers and announce_to_all_tiers behavior
* lt:fix suggest_read_cache setting
* lt:back-off tracker hostname looksups resulting in NXDOMAIN
* lt:lower SOCKS5 UDP keepalive timeout
* lt:fix external IP voting for multi-homed DHT nodes
* lt:deprecate broadcast_lsd setting. Just use multicast
* lt:deprecate upnp_ignore_nonrouters setting
* lt:don't attempt sending event=stopped if event=start never succeeded
* lt:make sure &key= stays consistent between different source IPs (as mandated by BEP7)
* lt:fix binding sockets to outgoing interface
* lt:add new socks5_alert to trouble shoot SOCKS5 proxies

* fix erroneous event=completed tracker announce when checking files
* promote errors in parsing listen_interfaces to post listen_failed_alert
* fix bug in protocol encryption/obfuscation
* fix buffer overflow in SOCKS5 UDP logic
* fix issue of rapid calls to file_priority() clobbering each other
* clear tracker errors on success
* optimize setting with unlimited unchoke slots
* fixed restoring of trackers, comment, creation date and created-by in resume data
* fix handling of torrents with too large pieces
* fixed division by zero in anti-leech choker
* fixed bug in torrent_info::swap

* libtorrent 1.2.3 update (b5bf6c3260bd726b0181671625c007be5ad49845)
* using android NDK r20b
* upgraded to boost 1.72.0
* upgraded to openssl 1.1.1d
* swig version 4.0.1 (from 3.0.12)
* lt:fix erroneous event=completed tracker announce when checking files
* lt:promote errors in parsing listen_interfaces to post listen_failed_alert
* lt:fix bug in protocol encryption/obfuscation
* lt:fix buffer overflow in SOCKS5 UDP logic
* lt:fix issue of rapid calls to file_priority() clobbering each other
* lt:clear tracker errors on success
* lt:optimize setting with unlimited unchoke slots
* lt:fixed restoring of trackers, comment, creation date and created-by in resume data
* lt:fix handling of torrents with too large pieces
* lt:fixed division by zero in anti-leech choker
* lt:fixed bug in torrent_info::swap