Add versioned dependency on base-files (>= 5.0.0) to dpkg-dev

We want to ensure that /etc/dpkg/origins/default exists as it's used
by dpkg-source to know what keyrings should be used for the signature
check.

debian/changelog

@@ -3,6 +3,10 @@ dpkg (1.15.5) UNRELEASED; urgency=low
   [ Guillem Jover ]
   * Remove obsolete conffiles on purge. Closes: #421367, #453005, #454628
 
+  [ Raphaël Hertzog ]
+  * Add versioned dependency on base-files (>= 5.0.0) to dpkg-dev to ensure
+    that /etc/dpkg/origins/default exists. Closes: #545275
+
   [ Updated dpkg translations ]
   * German (Sven Joachim).
 

debian/control

@@ -41,7 +41,7 @@ Section: utils
 Priority: optional
 Architecture: all
 Depends: dpkg (>= 1.15.4), perl5, perl-modules, bzip2, lzma,
- patch (>= 2.2-1), make, binutils, libtimedate-perl
+ patch (>= 2.2-1), make, binutils, libtimedate-perl, base-files (>= 5.0.0)
 Recommends: gcc | c-compiler, build-essential, fakeroot, gnupg, gpgv
 Suggests: debian-keyring, debian-maintainers
 Conflicts: dpkg-cross (<< 2.0.0), devscripts (<< 2.10.26)