Bugfix update to new upstream release 1.43.8.

This fixes a few important bugs where updates are missed, displayed data is
incorrect, a use-after-free-bug and fixes important bugs WRT super block
handling on big-endian systems (missed byte-swaps).

Changelog: http://e2fsprogs.sourceforge.net/e2fsprogs-release.html#1.43.8

MFH: 2018Q1