Merge branch 'mf/format-patch-commit-list-format' into mf/format-patch-commit-list-format-doc

* mf/format-patch-commit-list-format: format-patch: --commit-list-format without prefix format-patch: add preset for --commit-list-format format-patch: wrap generate_commit_list_cover() format.commitListFormat: strip meaning from empty docs/pretty-formats: add %(count) and %(total) format-patch: rename --cover-letter-format option format-patch: refactor generate_commit_list_cover pretty.c: better die message %(count) and %(total) docs: add usage for the cover-letter fmt feature format-patch: add commitListFormat config format-patch: add ability to use alt cover format format-patch: move cover letter summary generation pretty.c: add %(count) and %(total) placeholders