zfs: merge openzfs/zfs@c3b60eded (zfs-2.1-release) into stable/13

Notable upstream pull request merges:
#12015 Replace zstreamdump with zstream link
#12046 Improve scrub maxinflight_bytes math.

zfs: merge openzfs/zfs@c3b60eded (zfs-2.1-release) into stable/13

Notable upstream pull request merges:
#12015 Replace zstreamdump with zstream link
#12046 Improve scrub maxinflight_bytes math.
#12052 FreeBSD: incorporate changes to the VFS_QUOTACTL(9) KPI
#12072 Let zfs diff be more permissive
#12091 libzfs: On FreeBSD, use MNT_NOWAIT with getfsstat
#12104 Reminder to update boot code after zpool upgrade
#12114 Introduce write-mostly sums
#12125 Modernise all (most) remaining .TH manpages
#12145 More aggsum optimizations
#12149 Multiple man-pages: Move to appropriate section
#12158 Re-embed multilist_t storage
#12177 Livelist logic should handle dedup blkptrs
#12196 Unify manpage makefiles, move pages to better sexions, revisit some
#12212 Remove pool io kstats

Obtained from: OpenZFS
OpenZFS commit: c3b60ededa6e6ce36a457a54451ca153c4c630dc
OpenZFS tag: zfs-2.1.0-rc7

show more ...

Initial import from vendor-sys branch of openzfs