MFC r325390:

Use proper naming in a debug message.

MFC r326276:

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

MFC r303199:

ctld(8): Fix MaxBurstLength negotiation.

The target must reply with the selected value of MaxBurstSize instead of
just echoing back the initiator's offered value.

Reviewed by: mav@
Approved by: re@ (gjb@)
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7278