New upstream version

- update symbols file for new ABI
  - update copyright file
  - update ostree-boot packaging: the utilities in /usr/sbin moved to
    /usr/lib/ostree

debian/rules

@@ -50,8 +50,8 @@ override_dh_install:
 	rm -f debian/tmp/lib/systemd/system/ostree-remount.service
 	rm -fr debian/tmp/usr/lib/dracut/modules.d/98ostree/
 	rm -f debian/tmp/usr/lib/ostree/grub2-15_ostree
-	rm -f debian/tmp/usr/sbin/ostree-prepare-root
-	rm -f debian/tmp/usr/sbin/ostree-remount
+	rm -f debian/tmp/usr/lib/ostree/ostree-prepare-root
+	rm -f debian/tmp/usr/lib/ostree/ostree-remount
 	:
 	dh_install --fail-missing