Add a background image for the macOS installer.

MANIFEST

@@ -71,6 +71,7 @@ etc/codespell.skip
 etc/init.d/aix.sh.in
 etc/init.d/hpux.sh.in
 etc/init.d/sudo.conf.in
+etc/macos-background.png
 etc/sudo-logsrvd.pp
 etc/sudo-python.pp
 etc/sudo.pp

Makefile.in

@@ -384,6 +384,7 @@ package: @PPFILES@
 	$(MAKE) install INSTALL_OWNER= DESTDIR=$$DESTDIR && \
 	for p in @PPFILES@; do \
 	    $(SHELL) $(scriptdir)/pp $(PPFLAGS) --destdir=$$DESTDIR $$p \
+		srcdir=$(top_srcdir) \
 		prefix=$(prefix) \
 		bindir=$(bindir) \
 		sbindir=$(sbindir) \

etc/sudo-logsrvd.pp

@@ -141,10 +141,12 @@ This makes it possible to have all sudo I/O logs on a central server."
 %endif
 
 %if [macos]
+	pp_macos_pkg_type=flat
 	pp_macos_bundle_id=ws.sudo.pkg.sudo-logsrvd
+	pp_macos_pkg_background=${srcdir}/etc/macos-background.png
+	pp_macos_pkg_background_dark=${srcdir}/etc/macos-background.png
 	pp_macos_pkg_license=${pp_destdir}$docdir/LICENSE
 	pp_macos_pkg_readme=${pp_wrkdir}/ReadMe.txt
-	pp_macos_pkg_type=flat
 	perl -pe 'last if (/^What/i && $seen++)' ${pp_destdir}$docdir/NEWS > ${pp_wrkdir}/ReadMe.txt
 %endif
 

etc/sudo-python.pp

@@ -99,6 +99,8 @@
 %if [macos]
 	pp_macos_pkg_type=flat
 	pp_macos_bundle_id=ws.sudo.pkg.sudo-python
+	pp_macos_pkg_background=${srcdir}/etc/macos-background.png
+	pp_macos_pkg_background_dark=${srcdir}/etc/macos-background.png
 	pp_macos_pkg_license=${pp_destdir}$docdir/LICENSE
 	pp_macos_pkg_readme=${pp_wrkdir}/ReadMe.txt
 	perl -pe 'last if (/^What/i && $seen++)' ${pp_destdir}$docdir/NEWS > ${pp_wrkdir}/ReadMe.txt

etc/sudo.pp

@@ -300,6 +300,8 @@ still allow people to get their work done."
 %if [macos]
 	pp_macos_pkg_type=flat
 	pp_macos_bundle_id=ws.sudo.pkg.sudo
+	pp_macos_pkg_background=${srcdir}/etc/macos-background.png
+	pp_macos_pkg_background_dark=${srcdir}/etc/macos-background.png
 	pp_macos_pkg_license=${pp_destdir}$docdir/LICENSE
 	pp_macos_pkg_readme=${pp_wrkdir}/ReadMe.txt
 	perl -pe 'last if (/^What/i && $seen++)' ${pp_destdir}$docdir/NEWS > ${pp_wrkdir}/ReadMe.txt