Changes since version 2.2-dev3 :

Christopher Faulet (3):
      MINOR: contrib/prometheus-exporter: Add the last heathcheck duration metric
      BUG/MINOR: http-htx: Do case-insensive comparisons on Host header name
      MINOR: mux-h1: Remove useless case-insensitive comparisons

Emmanuel Hocdet (5):
      MINOR: ssl: move find certificate chain code to its own function
      MINOR: ssl: resolve issuers chain later
      MINOR: ssl: resolve ocsp_issuer later
      MINOR: ssl/cli: "show ssl cert" command should print the "Chain Filename:"
      MINOR: ssl: add "ca-verify-file" directive

Ilya Shipitsin (1):
      BUILD: cirrus-ci: suppress OS version check when installing packages

Jerome Magnin (1):
      BUG/MINOR: http_ana: make sure redirect flags don't have overlapping bits

Lukas Tribus (1):
      BUG/MINOR: dns: ignore trailing dot

Miroslav Zagorac (1):
      CLEANUP: contrib/spoa_example: Fix several typos

Tim Duesterhus (1):
      BUG/MINOR: sample: Make sure to return stable IDs in the unique-id fetch

William Lallemand (1):
      BUG/MEDIUM: ssl: chain must be initialized with sk_X509_new_null()

Willy Tarreau (42):
      MEDIUM: buffer: remove the buffer_wq lock
      BUG/MINOR: h2: reject again empty :path pseudo-headers
      MINOR: wdt: always clear sigev_value to make valgrind happy
      MINOR: epoll: always initialize all of epoll_event to please valgrind
      CLEANUP: fd: remove the FD_EV_STATUS aggregate
      CLEANUP: fd: remove some unneeded definitions of FD_EV_* flags
      MINOR: fd: merge the read and write error bits into RW error
      MINOR: rawsock: always mark the FD not ready when we're certain it happens
      MEDIUM: connection: make the subscribe() call able to wakeup if ready
      MEDIUM: connection: don't stop receiving events in the FD handler
      MEDIUM: mux-h1: do not blindly wake up the tasklet at end of request anymore
      BUG/MINOR: arg: don't reject missing optional args
      MINOR: tools: make sure to correctly check the returned 'ms' in date2std_log
      MINOR: debug: report the task handler's pointer relative to main
      BUG/MEDIUM: debug: make the debug_handler check for the thread in threads_to_dump
      MINOR: haproxy: export main to ease access from debugger
      MINOR: haproxy: export run_poll_loop
      MINOR: task: export run_tasks_from_list
      BUILD: tools: remove obsolete and conflicting trace() from standard.c
      MINOR: tools: add new function dump_addr_and_bytes()
      MINOR: tools: add resolve_sym_name() to resolve function pointers
      MINOR: debug: use resolve_sym_name() to dump task handlers
      MINOR: cli: make "show fd" rely on resolve_sym_name()
      MEDIUM: debug: add support for dumping backtraces of stuck threads
      MINOR: debug: call backtrace() once upon startup
      BUG/MINOR: wdt: do not return an error when the watchdog couldn't be enabled
      BUILD: Makefile: include librt before libpthread
      MEDIUM: wdt: fall back to CLOCK_REALTIME if CLOCK_THREAD_CPUTIME is not available
      MINOR: wdt: do not depend on USE_THREAD
      MINOR: debug: report the number of entries in the backtrace
      MINOR: debug: improve backtrace() on aarch64 and possibly other systems
      MINOR: debug: use our own backtrace function on clang+x86_64
      MINOR: debug: dump the whole trace if we can't spot the starting point
      BUILD: tools: unbreak resolve_sym_name() on non-GNU platforms
      BUILD: tools: rely on __ELF__ not USE_DL to enable use of dladdr()
      BUILD: makefile: do not modify the build options during make reg-tests
      BUG/MEDIUM: connection: stop polling for sending when the event is ready
      MEDIUM: stream-int: make sure to try to immediately validate the connection
      MINOR: tcp/uxst/sockpair: only ask for I/O when really waiting for a connect()
      MEDIUM: connection: only call ->wake() for connect() without I/O
      OPTIM: connection: disable receiving on disabled events when the run queue is too high
      OPTIM: mux-h1: subscribe rather than waking up at a few other places