man: Set the copyright holder for the original code

This is similar to commit a17d469cc3d5ccca9daa84f98fed3cc8e51e656d,
but this was just never assigned a proper copyright holder so it
defaulted to the FSF, which is not correct.

configure.ac

@@ -4,6 +4,7 @@ m4_pattern_forbid([^_?DPKG_])
 
 AC_PREREQ(2.60)
 AC_INIT([dpkg], m4_esyscmd([./get-version]), [debian-dpkg@lists.debian.org])
+AC_SUBST([PACKAGE_COPYRIGHT_HOLDER], ['Dpkg Developers'])
 AC_CONFIG_SRCDIR([lib/dpkg/dpkg.h])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])

debian/changelog

@@ -1,6 +1,6 @@
 dpkg (1.17.16) UNRELEASED; urgency=low
 
-  *
+  * Set the copyright holder in the po4a calls for man pages.
 
  -- Guillem Jover <guillem@debian.org>  Mon, 06 Oct 2014 03:37:15 +0200
 

man/Makefile.am

@@ -75,6 +75,7 @@ PO4A_V_0 = @echo "  PO4A   $@";
 
 PO4A_OPTS = --previous --srcdir $(srcdir) --destdir $(CURDIR) --no-backups \
             --package-name dpkg-man --package-version $(PACKAGE_VERSION) \
+            --copyright-holder "$(PACKAGE_COPYRIGHT_HOLDER)" \
             --msgid-bugs-address $(PACKAGE_BUGREPORT)
 
 all-local: all-local-@USE_PO4A@