add dpatch infrastructure

debian/control

@@ -2,7 +2,7 @@ Source: ps-watcher
 Section: admin
 Priority: extra
 Maintainer: Jan Wagner <waja@cyconet.org>
-Build-Depends: debhelper (>= 5), autotools-dev
+Build-Depends: debhelper (>= 5), autotools-dev, dpatch
 Build-Depends-Indep: libconfig-inifiles-perl, perl-modules
 Homepage: http://ps-watcher.sourceforge.net/
 Vcs-Browser: https://trac.cyconet.org/debian/browser/debian/ps-watcher

debian/rules

@@ -4,7 +4,9 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
-config.status: configure
+include /usr/share/dpatch/dpatch.make
+
+config.status: patch-stamp configure
 	dh_testdir
 	# Add here commands to configure the package.
 	./configure --prefix=/usr --mandir=\$${prefix}/share/man
@@ -18,7 +20,7 @@ build-stamp: config.status
 
 	touch $@
 
-clean:
+clean: unpatch
 	dh_testdir
 	dh_testroot
 	rm -f build-stamp