Fix lintian warnings

debian/rules

@@ -17,6 +17,7 @@ clean:
 	make clean
 	rm -f build
 	-rm -rf $(dt) debian/files* core debian/substvars debian/html
+	dh_clean
 
 binary-indep: checkroot build
 	$(checkdir)
@@ -36,24 +37,20 @@ binary-indep: checkroot build
 	cp config/example-administration.yml $(dt)/usr/share/doc/$(package)/examples/administration.yml
 	cp config/debug-config.php $(dt)/usr/share/doc/$(package)/examples
 	cp config/other-config.php $(dt)/usr/share/doc/$(package)/examples
+	find $(dt)/ -name ".gitignore" -exec rm {} \;
 	dh_installchangelogs
 	dh_fixperms
 	# install -m 1777 -d $(dt)/var/lib/$(package)/attachments
 	dh_installdeb
 	dpkg-gencontrol -P$(dt)
+	dh_md5sums
 	dpkg --build $(dt) ..
 
-binary-arch: checkroot build
-	$(checkdir)
-# There are no architecture-dependent files to be uploaded
-# generated by this package.  If there were any they would be
-# made here.
-
 define checkdir
 	test -f debian/rules
 endef
 
-binary: binary-indep binary-arch
+binary: binary-indep
 
 checkroot:
 	$(checkdir)