* Remove `tr_file_move_strict()`, add param to `tr_file_move()` instead
Also restores proper `local_error` logic to handle null error param.
* Remove unused `moved_files` logic
* Rename the callback type and params to match rename decls
* Add torrent ID param to torrent removal callback
* Remove mutex from torrent removal callback
Torrent IDs aren't reused during the lifetime of the session.
* Move main removal callback logic into a separate method
* Do not remove torrent if trashing files failed.
Instead, stop the torrent and sets an error.
* Fixing GTK interface with new file removal behavior.
* C++17 compliant.
* Reverting unrelated change.
* Avoiding allocating unecessary objects.
* Easy review fixes.
* Fixing merge error.
* Adding result callback to tr_torrentRemove().
Using the new callback in Gtk GUI to decide when to remove it from the
interface.
* Reducing indentation level and making the function more readable.
* Using existing Session RefPtr.
* Notifying the client before freeing the torrent in the session.
* Addressing comments and synchronizing callback.
* Moving include.
* Fix constness issue reported by clang-tidy
* refactor: remove the tr_error** idiom
* fix: tr_error::message() is only constexpr in c++20 and up
* chore: silence a couple of g++-12 Wshadow warnings
* chore: rename tr_strvContains to tr_strv_contains
* chore: rename tr_strvStartsWith to tr_strv_starts_with
* chore: rename tr_strvEndsWith to tr_strv_ends_with
* chore: rename tr_strvSep to tr_strv_sep
* chore: rename tr_strvStrip to tr_strv_strip
* chore: rename tr_strvToBuf to tr_strv_to_buf
* refactor: rename tr_saveFile() to tr_file_save()
rename tr_loadFile() to tr_file_read()
rename tr_moveFile() to tr_file_move()
* refactor: rename tr_parseNum() to tr_num_parse()
refactor: rename tr_parseNumRange() to tr_num_parse_range()
* chore: group related functions together in header
Mike Gelfand