Commits since last release

Check upstream for the full history.

• Fix gtk icon theme does not reflect commit
• Increase probability that a process test succeeds. commit
• Remove a pointless check for WCOREDUMPED. commit
• Support keyval style beamer frame labels commit
• Remove reference to gnus-bug-create-help-buffer commit
• Don't unblock SIGCHLD too early. commit
• Count Flymake diagnostics in modeline by severity, not type commit
• lisp/emacs-lisp/cl-macs.el (cl--self-tco): Fix build of gnus-agent.el commit
• Improve `comp-libgccjit-reproducer' commit
• Fix cl-concatenate use in macros commit
• Add new customize `comp-libgccjit-reproducer' commit
• lisp/emacs-lisp/cl-macs.el: Optimize self-calls in tail position commit