debian: Revert the perl to perl:any dependency change in libdpkg-perl

Even though this was a correct change, it currently breaks debootstrap in
stable (jessie), testing (stretch) and unstable, which does not support
arch-qualified dependencies.

We'll have to live with the Multi-Arch hinter being unhappy for now.

debian/changelog

@@ -1,5 +1,12 @@
 dpkg (1.18.18) UNRELEASED; urgency=medium
 
+  [ Guillem Jover ]
+  * Packaging:
+    - Revert the perl to perl:any dependency change in libdpkg-perl, as that
+      breaks debootstrap in stable (jessie), testing (stretch) and unstable,
+      which do not support arch-qualified dependencies. We'll have to live
+      with the Multi-Arch hinter being unhappy for now.
+
   [ Updated man pages translations ]
   * German (Helge Kreutzmann).
 

debian/control

@@ -124,7 +124,10 @@ Architecture: all
 Multi-Arch: foreign
 Depends:
  ${misc:Depends},
- perl:any,
+# XXX: This needs to be perl:any, but that breaks debootstrap in jessie
+# (the current stable), it could be fixed once and iff stretch is stable
+# and contains a fixed debootstrap.
+ perl,
 # Needed for arch tuples.
  dpkg (>= 1.18.11),
 Recommends: