Merge branch 'ab/various-leak-fixes'

Various leak fixes.

* ab/various-leak-fixes:
  built-ins: use free() not UNLEAK() if trivial, rm dead code
  revert: fix parse_options_concat() leak
  cherry-pick: free "struct replay_opts" members
  rebase: don't leak on "--abort"
  connected.c: free the "struct packed_git"
  sequencer.c: fix "opts->strategy" leak in read_strategy_opts()
  ls-files: fix a --with-tree memory leak
  revision API: call graph_clear() in release_revisions()
  unpack-file: fix ancient leak in create_temp_file()
  built-ins & libs & helpers: add/move destructors, fix leaks
  dir.c: free "ident" and "exclude_per_dir" in "struct untracked_cache"
  read-cache.c: clear and free "sparse_checkout_patterns"
  commit: discard partial cache before (re-)reading it
  {reset,merge}: call discard_index() before returning
  tests: mark tests as passing with SANITIZE=leak

diff --cc builtin/add.c
Simple merge

diff --cc builtin/checkout.c
Simple merge

diff --cc builtin/commit.c
Simple merge

diff --cc builtin/diff.c
Simple merge

diff --cc builtin/merge.c
Simple merge

diff --cc builtin/rebase.c
Simple merge

diff --cc builtin/repack.c
Simple merge

diff --cc builtin/reset.c
Simple merge

diff --cc builtin/rev-parse.c
Simple merge

diff --cc builtin/revert.c
Simple merge

diff --cc builtin/stash.c
Simple merge

diff --cc connected.c
Simple merge

diff --cc read-cache.c
Simple merge

diff --cc ref-filter.c
Simple merge

diff --cc revision.c
Simple merge

diff --cc sequencer.c
Simple merge

diff --cc t/helper/test-fake-ssh.c
Simple merge

diff --cc t/t0068-for-each-repo.sh
Simple merge

diff --cc t/t1022-read-tree-partial-clone.sh
Simple merge