d/rules: use the awesome "dh $@" simplification.

I've confirmed with diffoscope that this only affects
comments/timestampes within images inside
./usr/share/debian-cd/data/cts_amiga_info.tar.gz
and that those are only set to the date defined by
SOURCE_DATE_EPOCH, thus the package still builds reproducibly, just the
timestamps are of todaz/SOURCE_DATE_EPOCH and not from 2007.

Signed-off-by: Holger Levsen <holger@layer-acht.org>

debian/changelog

@@ -46,6 +46,7 @@ debian-cd (3.1.22) UNRELEASED; urgency=medium
     - don't recommend syslinux-utils twice, thanks lintian.
     - bump standards version to 4.3.0, no changes needed.
     - add "Rules-Requires-Root: no" to support building as non-root.
+  * d/rules: use the awesome "dh $@" simplification.
   * Add lintian override for missing-depends-on-sensible-utils as
     sensible-editor is merely mentioned in the README.
   * d/copyright: explicitly refer to /usr/share/common-licenses/GPL-2.

debian/rules

@@ -1,29 +1,15 @@
 #!/usr/bin/make -f
-#-*- makefile -*-
-# Made with the aid of dh_make, by Craig Small
-# Sample debian/rules that uses debhelper. GNU copyright 1997 by Joey Hess.
-# Some lines taken from debmake, by Christoph Lameter.
 
-build-arch build-indep: build-stamp
-build-stamp:
-	dh_testdir
-	touch build-stamp
+# Uncomment this to turn on verbose mode.
+# #export DH_VERBOSE=1
 
-clean:
-	dh_testdir
-	dh_testroot
-	rm -f build-stamp install-stamp
-	dh_clean
+%:
+	dh $@
 
-install: install-stamp
-install-stamp: build-stamp
-	dh_testdir
-	dh_testroot
-	dh_prep
-	dh_installdirs
-	dh_lintian
+override_dh_auto_clean:
+	:
 
-	# Add here commands to install the package into debian/tmp.
+override_dh_auto_install:
 	cp -r contrib tools tasks data Makefile README README.devel build.sh \
               build_all.sh update-cd easy-build.sh README.easy-build \
               debian/debian-cd/usr/share/debian-cd/
@@ -40,32 +26,5 @@ install-stamp: build-stamp
 		merge-sums mkjigsnap mklist mktorrent \
 		report_build_error testingcds
 
-	touch install-stamp
-
-# Build architecture-dependent files here.
-binary-arch: build install
-# We have nothing to do by default.
-
-# Build architecture-independent files here.
-binary-indep: build install
-	dh_testdir
-	dh_testroot
+override_dh_installdocs:
 	dh_installdocs README* DEDICATION.txt
-	dh_installexamples
-	dh_installmenu
-	dh_installcron
-	dh_installman
-	dh_installchangelogs
-	dh_link
-	dh_strip
-	dh_compress
-	dh_fixperms
-	dh_installdeb
-	dh_shlibdeps
-	dh_gencontrol
-	dh_md5sums
-	dh_builddeb
-
-binary: binary-indep binary-arch
-build: build-arch build-indep
-.PHONY: build-arch build-indep  build clean binary-indep binary-arch binary