Merge branch 'rs/tempfile-wo-the-repository' into jch

The tempfile and lockfile APIs have been refactored to stop depending on the 'the_repository' global variable, and their callers have been updated to use the repository-aware variants. * rs/tempfile-wo-the-repository: use repo_hold_lock_file_for_update{,_mode,_timeout}() with custom repos tempfile: stop using the_repository lockfile: add repo_hold_lock_file_for_update{,_timeout}{,_mode}() refs/packed: use repo_create_tempfile() tempfile: add repo_create_tempfile{,_mode}()