base-files: Stop trampolining from the install target

Debhelper no longer calls into the install target, so we should do all of our
installation in override_dh_auto_install instead.

Change-Id: I306c4dfec5d3a74c3120b0563009d92268cd6624
diff --git a/debian/rules b/debian/rules
index e0143b0..5e36c4b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -9,6 +9,7 @@
 endif
 
 VENDORFILE = mendel
+DESTDIR = debian/base-files
 
 %:
 	dh $@
@@ -19,7 +20,21 @@
 	sed -e "s/#VENDORFILE#/$(VENDORFILE)/g" debian/postinst.in > debian/postinst
 
 override_dh_auto_install:
-	debian/rules install DESTDIR=`pwd`/debian/base-files
+	install -p -m 644 etc/*      $(DESTDIR)/etc
+	install -p -m 755 motd/*     $(DESTDIR)/etc/update-motd.d
+	install -p -m 644 licenses/* $(DESTDIR)/usr/share/common-licenses
+	install -p -m 644 origins/*  $(DESTDIR)/etc/dpkg/origins
+	install -p -m 644 share/*    $(DESTDIR)/usr/share/base-files
+ifeq ($(DEB_HOST_GNU_SYSTEM),gnu)
+	rmdir $(DESTDIR)/sys
+endif
+	sed -e "s&#OSNAME#&$(OSNAME)&g" share/motd     > $(DESTDIR)/usr/share/base-files/motd
+	sed -e "s&#OSNAME#&$(OSNAME)&g" share/info.dir > $(DESTDIR)/usr/share/base-files/info.dir
+	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/issue      > $(DESTDIR)/etc/issue
+	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/issue.net  > $(DESTDIR)/etc/issue.net
+	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/os-release > $(DESTDIR)/etc/os-release
+	mv $(DESTDIR)/etc/os-release $(DESTDIR)/usr/lib/os-release
+	ln -s ../usr/lib/os-release $(DESTDIR)/etc/os-release
 
 override_dh_link:
 	dh_link -X os-release
@@ -36,18 +51,3 @@
 	cd debian/base-files && chmod 700 root
 
 install:
-	install -p -m 644 etc/*      $(DESTDIR)/etc
-	install -p -m 755 motd/*     $(DESTDIR)/etc/update-motd.d
-	install -p -m 644 licenses/* $(DESTDIR)/usr/share/common-licenses
-	install -p -m 644 origins/*  $(DESTDIR)/etc/dpkg/origins
-	install -p -m 644 share/*    $(DESTDIR)/usr/share/base-files
-ifeq ($(DEB_HOST_GNU_SYSTEM),gnu)
-	rmdir $(DESTDIR)/sys
-endif
-	sed -e "s&#OSNAME#&$(OSNAME)&g" share/motd     > $(DESTDIR)/usr/share/base-files/motd
-	sed -e "s&#OSNAME#&$(OSNAME)&g" share/info.dir > $(DESTDIR)/usr/share/base-files/info.dir
-	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/issue      > $(DESTDIR)/etc/issue
-	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/issue.net  > $(DESTDIR)/etc/issue.net
-	sed -e "s&#OSNAME#&$(OSNAME)&g" etc/os-release > $(DESTDIR)/etc/os-release
-	mv $(DESTDIR)/etc/os-release $(DESTDIR)/usr/lib/os-release
-	ln -s ../usr/lib/os-release $(DESTDIR)/etc/os-release