Changes since version 2.5-dev5 :

Remi Tricot-Le Breton (5):
      MINOR: log: Remove log-error-via-logformat option
      MINOR: log: Add new "error-log-format" option
      MINOR: ssl: Add new ssl_bc_hsk_err sample fetch
      MINOR: connection: Add a connection error code sample fetch for backend side
      REGTESTS: ssl: Add tests for bc_conn_err and ssl_bc_hsk_err sample fetches

Tim Duesterhus (3):
      BUG/MINOR threads: Use get_(local|gm)time instead of (local|gm)time
      BUG/MINOR: tools: Fix loop condition in dump_text()
      CLEANUP: Add missing include guard to signal.h

Willy Tarreau (13):
      BUILD: ssl: next round of build warnings on LIBRESSL_VERSION_NUMBER
      BUILD: ssl: fix two remaining occurrences of #if USE_OPENSSL
      BUILD: tools: properly guard __GLIBC__ with defined()
      BUILD: globally enable -Wundef
      BUG/MAJOR: queue: better protect a pendconn being picked from the proxy
      MINOR: http-rules: add a new "ignore-empty" option to redirects.
      CI: Github Actions: temporarily disable BoringSSL builds
      BUG/MINOR: vars: fix set-var/unset-var exclusivity in the keyword parser
      BUG/MINOR: vars: improve accuracy of the rules used to check expression validity
      MINOR: sample: add missing ARGC_ entries
      BUG/MINOR: vars: properly set the argument parsing context in the expression
      DOC: configuration: remove wrong tcp-request examples in tcp-response
      MEDIUM: vars: add a new "set-var-fmt" action