Both utilities were included as one man page, but this caused a problem:
Sphinx directive .. include was used twice on the same file, which
prevented us from using labels (or anything with unique identifier) in
the man pages. This effectivelly prevented linking to them.
Splitting man pages allows us to solve the linking problems and also
clearly make text easier to follow because it does not mention two tools
at the same time.
This change causes duplication of text, but given the frequecy of changes
to these tools I think it is acceptable. I've considered deduplication
using smaller .rst snippets which get included into both man pages,
but it would require more sed scripting to handle defaults etc. and
I think it would be way too complex solution for this problem.
Related: #2799
This commit converts the license handling to adhere to the REUSE
specification. It specifically:
1. Adds used licnses to LICENSES/ directory
2. Add "isc" template for adding the copyright boilerplate
3. Changes all source files to include copyright and SPDX license
header, this includes all the C sources, documentation, zone files,
configuration files. There are notes in the doc/dev/copyrights file
on how to add correct headers to the new files.
4. Handle the rest that can't be modified via .reuse/dep5 file. The
binary (or otherwise unmodifiable) files could have license places
next to them in <foo>.license file, but this would lead to cluttered
repository and most of the files handled in the .reuse/dep5 file are
system test files.
The named-checkzone tool can also be invoked as named-compilezone. Make
sure a man page is installed for that alias. Move and rename the
"man_named-checkzone" label to prevent a Sphinx duplicate label warning
from being raised (see commit 84862e96c1fcff6e7c1ca31884e2fad921afa4f7
for more information).
