devel/e2fsprogs-libss: merge to sysutils/e2fsprogs

This is to break dependency cycles between e2fsprogs-libss and
e2fsprogs (see 254751 comment #18 for details), and to avoid creating
yet another split-out port, then for e2fsprogs's libcom_err.

Bump PORTREVISION of the four e2fsprogs consumers to flush out
their e2fsprogs-libss dependency records.

PR: 254751
Reported by: Felix Palmen
PR: 261217
Reported by: tech-lists@zyxst.net
Fixes: 8e6ae60 devel/e2fsprogs-libss: use local compile_et...

Approved by: prior maintainer timeout (Ben Kaduk, 7 months) on 254751

(cherry picked from commit 29b349b2dba2a188140cb73fe451a9b9793178d4)