ttcp only on 6-freebsd-12 and not on master of libbsd

[Christian Mauderer]

Hello,

in a discussion with Husni I noted that the patches adding ttcp are only 
on the 6-freebsd-12 branch of libbsd. Is there a reason that they are 
not on master too?

https://git.rtems.org/rtems-libbsd/commit/?h=6-freebsd-12&id=af06b267c5ce04e8a4a7719cb0c723ee4a27f4b4
https://git.rtems.org/rtems-libbsd/commit/?h=6-freebsd-12&id=7960ab7a43d5a7c6ceccdd67f8e379adfce7a633
https://git.rtems.org/rtems-libbsd/commit/?h=6-freebsd-12&id=6cc63cbe657c3ee664727cce1a54acc7e7b5fe9d
https://git.rtems.org/rtems-libbsd/commit/?h=6-freebsd-12&id=8dfea31d729fafab69b5cf1846598f5104b0faeb

Background for the question: I expect that an update to FreeBSD 13 will 
use only what is on the master branch. That's basically what master is 
for: Tracking the development to keep up with new stuff in FreeBSD and 
make it easy to jump to the next FreeBSD release. In other words: I 
think a (possible future) 6-freebsd-13 branch will be based on master 
and not on 6-freebsd-12. Am I wrong with that assumption?

Again: please correct me if I'm wrong but with that in mind I would say 
that it is a good idea to port to master and 6-freebsd-12 or (for 
experimental stuff) only to master. But not only to 6-freebsd-12.

Best regards

Christian