Log Message:
tex-jlreq{,-doc}: update to 2021.63004

- Added `warichu_opening` and `warichu_closing` to `\jlreqsetup`.
- Change a little bit penalties around block heading.
- Fixed a bug: `\selectfont` after `\DeclareFontShape` raised an error.
- Fixed a bug: `use_reverse_pagination` did not work.
- Fixed a bug: A second running head disappeared sometimes.
- Rewrote `\DeclarePageStyle`.
- Deleted `\@makefntext`, define `\@makefntext` directly.