(Re)ënable the `ATTRIBUTE_FORMAT` on `my_dbug.h`’s `_db_doprnt_`
(better known by its frontend `DBUG_PRINT`) and `ma_recovery_util.h`’s
`tprint` & `eprint` to leverage GCC `-Wformat` checking
c4bf4b7aef introduced `WAITING_FOR_BUGFIX_TO_VSPRINTF` to conditionally
(read: temporarily) disable their `ATTRIBUTE_FORMAT`s.
Whatever that bug was aside, MDEV-21978 Zulip suggested that the
preference for `%b` was probably intended, although c52e62a76f
reverted the one in `storage/maria/ma_recovery.c` back to `%s`.
All extension migrations (e.g., `%b` ➡ `%sB`)
in this commit were on `DBUG_PRINT`.
21dfef474c