* Sync translations with code
* Sync translations with Transifex
* Remove Mac menu title that isn't displayed and shouldn't be translated
* Add context to logging level strings in GTK client
* Use "µTP" consistently in code
* Use ellipsis instead of three docs in Qt client strings
* Close HTML tags in blocklist-related strings
* Remove trailing space from a translatable string in Qt client
* Add missing plural forms for English strings in Qt client
* Fix spelling: metaInfo -> metainfo
* chore: use typesafe sin_addr assignment instead of memcpy()
* refactor: make tr_dhtPrintableStatus private
* refactor: make tr_dhtStatus() private
* refactor: make tr_dht status enum private
* refactor: add safety mutex wrapper around libdht API calls
* refactor: make tr_dht::Status an enum class
* refactor: rename private functions
* refactor: const correctness
* refactor: use typesafe assignment instead of memcpy
* refactor: tr_session does not directly call tr_dht
* refactor: tr_dhtPort() returns std::optional
* refactor: use tr_address::fromCompact4 in tr-dht.cc
* refactor: do not use goto in file-win32.cc
* refactor: do not use goto in subprocess-posix.cc
* refactor: do not use goto in peer-io.cc
* build: add cppcoreguidelines-avoid-goto to libtransmission/.clang-tidy
* Use std::unique_ptr to manage UDP core object
N.B.: it's no longer valid to call socket adjustments quirks from
tr_sessionSetUTPEnabled() because the corresponding object may be
not created yet. We have to create (or re-create) it explicitly
(like it's done in tr_sessionSetDHTEnabled()) or just set
is_utp_enabled_ flag of the session and assume that socket
adjustments will be done later when the object is constructed.
* refactor: remove tr_address_compare()
* refactor: remove tr_address_to_string()
* refactor: remove NUM_TR_AF_INET_TYPES
* refactor: replace tr_sessionGetPublicAddress with tr_session::getPublicAddress()
* refactor: tr_peerIo() takes tr_address by value
* refactor: replace tr_sessionIsAddressBlocked with tr_session::isAddressBlocked()
* refactor: tr_peerMgrAddIncoming now takes tr_address by value
* refactor: replace tr_address_is_valid_for_peers() with tr_address.isValidForPeers()
* refactor: tr_netOpenPeerSocket takes tr_address by value
* refactor: remove tr_generateAllowedSet()
* refactor: setup_sockaddr takes a tr_address by value
* refactor: tr_netBindTCP() takes a tr_address by value
* refactor: tr_dhtAddNode() takes a tr_address by value
* refactor: remove tr_address_from_string()
* refactor: rename tr_address.isValidForPeers() to .isValidPeerAddress()
* refactor: replace tr_address_from_sockaddr_storage() with tr_address::fromSockaddrStorage()
* refactor: minor cleanup to tr_address::readable()
* fix: ESPIPE "illegal seek" error while seeding
The root cause is createSocket returning `{}` instead of `TR_BAD_SOCKET`
when we have too many peers in use. This defaulted to fd 0, which wound
up closing stdin.
Commit also includes some const-correctness changes made while tracking
the problem down.
Charles Kerr