* test: new `tr_variant` API in `json-test.cc`
* test: new `tr_variant` API in `variant-test.cc`
* chore: housekeeping
* test: new `tr_variant` API in `dht-test.cc`
* fix: use `reinterpret_cast` in `tr_variant::make_raw()`
* fix: add missing `typename` in `tr_variant::make_raw()`
* test: new `tr_variant` API in `settings-test.cc`
* test: new `tr_variant` API in `move-test.cc`
* test: new `tr_variant` API in `rpc-test.cc`
* test: new `tr_variant` API in `makemeta-test.cc`
* test: new `tr_variant` API in `session-test.cc`
* Use imported CMake target for CURL
* Use imported CMake target for fmtlib
* Use imported CMake target for WideInteger
* Use imported CMake target for FastFloat
* Use imported CMake target for UtfCpp
* Use imported CMake target for Threads
* Use imported CMake target for Iconv
* Use imported CMake target for crypto backend
* Use imported CMake target for GTK
* Use imported CMake target for Qt
* Use imported CMake target for deflate
* Use imported CMake target for libevent
* Use imported CMake target for natpmp
* Use imported CMake target for miniupnpc
* Use imported CMake target for dht
* Use imported CMake target for psl
* Use imported CMake target for libutp
* Use imported CMake target for libb64
* Use include directories from libtransmission target
* refactor: move tr_tracker_http_announce() helper funcs into their own namespace
* refactor: move tr_globalIPv6() helper funcs into their own namespace
* refactor: move tr_address_is_valid_for_peers() helper funcs into their own namespace
* refactor: make tr_address_compare() a private method
* refactor: rename tr_address::isIPv4() to is_ipv4()
* refactor: use snake_case for tr_address methods
* refactor: make tr_address_is_valid_for_peers() a member function
* refactor: add tr_rand_obj()
There are a lot of places in the codebase where we need to populate
an integral type or a fixed-size array with random data. To do this,
we instantiate a local on the stack, fill it with tr_rand_buffer(),
and then use it.
This PR creates a helper function to make this a one-liner.
