Common subdirectories: datefudge-1.18.orig/debian and datefudge-1.18/debian
diff -u datefudge-1.18.orig/Makefile datefudge-1.18/Makefile
--- datefudge-1.18.orig/Makefile	2013-05-11 19:02:28.000000000 +0200
+++ datefudge-1.18/Makefile	2013-11-13 15:18:56.919488272 +0100
@@ -1,6 +1,6 @@
 # $Id: Makefile 19 2011-02-14 22:21:52Z robert $
 
-VERSION := $(shell dpkg-parsechangelog | sed -n 's/^Version: //p')
+VERSION := 1.18
 
 CC       = gcc
 CFLAGS  += -Wall -Wextra -D_REENTRANT -fpic
@@ -20,11 +20,11 @@
 
 install: datefudge datefudge.so datefudge.1
 	install -d $(DESTDIR)$(libdir)/$(libarch)
-	$(INSTALL_PROGRAM) -o root -g root -m 644 datefudge.so $(DESTDIR)$(libdir)/$(libarch)/datefudge.so
+	$(INSTALL_PROGRAM) -p -m 644 datefudge.so $(DESTDIR)$(libdir)/$(libarch)/datefudge.so
 	install -d $(DESTDIR)$(bindir)
-	$(INSTALL_PROGRAM) -o root -g root -m 755 datefudge $(DESTDIR)$(bindir)
+	$(INSTALL_PROGRAM) -p -m 755 datefudge $(DESTDIR)$(bindir)
 	install -d $(DESTDIR)$(mandir)/man1
-	install -o root -g root -m 644 datefudge.1 $(DESTDIR)$(mandir)/man1
+	install -p -m 644 datefudge.1 $(DESTDIR)$(mandir)/man1
 
 datefudge: datefudge.sh
 datefudge.1: datefudge.man