Drop systemd-dbg

Move to debhelpers' automatic -dbgsym packages. Add corresponding
--dbgsym-migration package relation.

debian/changelog

@@ -3,6 +3,7 @@ systemd (229-6) UNRELEASED; urgency=medium
   * systemd-container: Prefer renamed "btrfs-progs" package name over
     "btrfs-tools". (Closes: #822629)
   * systemd-container: Recommend libnss-mymachines. (Closes: #822615)
+  * Drop systemd-dbg, in favor of debhelpers' automatic -dbgsym packages.
 
  -- Martin Pitt <mpitt@debian.org>  Tue, 26 Apr 2016 22:20:43 +0200
 

debian/control

@@ -364,16 +364,3 @@ Description: libudev shared library
  This library provides access to udev device information.
  .
  This is a minimal version, only for use in the installation system.
-
-Package: systemd-dbg
-Architecture: linux-any
-Section: debug
-Priority: extra
-Depends: ${misc:Depends},
-         systemd (= ${binary:Version}),
-         udev (= ${binary:Version}),
-         libsystemd0 (= ${binary:Version}),
-         libudev1 (= ${binary:Version})
-Description: system and service manager (debug symbols)
- This package contains the debugging symbols for systemd, udev and
- related libraries.

debian/rules

@@ -275,7 +275,7 @@ override_dh_autoreconf:
 	dh_autoreconf --as-needed debian/rules -- autoreconf
 
 override_dh_strip:
-	dh_strip --dbg-package=systemd-dbg
+	dh_strip --dbgsym-migration='systemd-dbg (<< 229-6~)'
 
 override_dh_auto_test:
 ifeq (, $(filter nocheck, $(DEB_BUILD_OPTIONS)))