Use the upstream man-pages

There's nothing wrong with them and they include a build-date which will make
the binary packages non-reproducible if they are regenerated when the packages
are built.

* d/clean: remove man-pages
* d/control: remove man-page build-deps
* d/patches: add upstream patch to prevent removal of man-pages by `make clean`

Signed-off-by: Jeremy Sowden <[email protected]>

debian/clean

@@ -1,4 +1 @@
-doc/*.3
-doc/*.5
-doc/*.8
 py/nftables.egg-info/

debian/control

@@ -4,12 +4,10 @@ Priority: important
 Maintainer: Debian Netfilter Packaging Team <[email protected]>
 Uploaders: Arturo Borrero Gonzalez <[email protected]>,
            Jeremy Sowden <[email protected]>
-Build-Depends: asciidoc-base,
-               automake,
+Build-Depends: automake,
                bison,
                debhelper-compat (= 13),
                dh-python,
-               docbook-xsl,
                flex,
                libeditreadline-dev,
                libgmp-dev,

debian/patches/0005-doc-move-man-pages-to-MAINTAINERCLEANFILES.patch

@@ -0,0 +1,25 @@
+Description: doc: move man-pages to `MAINTAINERCLEANFILES`
+ .
+ Since the man-pages are built and included in the distribution
+ tar-balls, the appropriate clean target is `maintainer-clean`.
+From: Jeremy Sowden <[email protected]>
+Last-Update: 2023-08-10
+Origin: upstream, http://git.netfilter.org/nftables/commit/?id=520a8ba89d118c14de9376e6e21160e71d74fbe0
+---
+ doc/Makefile.am | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/doc/Makefile.am b/doc/Makefile.am
+index 5a64e39b48cf..b43cb08d2d14 100644
+--- a/doc/Makefile.am
++++ b/doc/Makefile.am
+@@ -26,5 +26,5 @@ nft.8: ${ASCIIDOCS}
+ .adoc.5:
+ 	${AM_V_GEN}${A2X} ${A2X_OPTS_MANPAGE} $<
+
+-CLEANFILES += ${man_MANS}
++MAINTAINERCLEANFILES = ${man_MANS}
+ endif
+-- 
+2.40.1
+

debian/patches/series

@@ -2,3 +2,4 @@
 0002-py-move-package-source-into-src-directory.patch
 0003-py-use-setup.cfg-to-configure-setuptools.patch
 0004-py-add-pyproject.toml-to-support-PEP-517-compatible-.patch
+0005-doc-move-man-pages-to-MAINTAINERCLEANFILES.patch