net/td-system-tools: Update 2.4.2 => 2.6.4

While here, populate OPTIONS and update COMMENT.

Changelog:
https://github.com/dreibh/system-tools/blob/td-system-tools-2.6.4/ChangeLog
Commit log:
https://github.com/dreibh/system-tools/compare/td-system-tools-2.4.2...td-system-tools-2.6.4

PR: 295527
Reported by: Thomas Dreibholz <thomas.dreibholz@gmail.com> (maintainer)
Approved by: osa, vvd (Mentors, implicit)