Pass --yes to lvcreate only if LVM version is 2.02.99 or higher

Fixes regression introduced with 4.5 by the fix for #754517. The
regression has been reported upstream at
http://xen-tools.org/pipermail/xen-tools-discuss/2015-January/001079.html

Uses Sort::Versions for that. So add a new (build-)dependency on
libsort-versions-perl in the Debian package.

debian/changelog

@@ -29,6 +29,9 @@ xen-tools (4.5+dev-1) UNRELEASED; urgency=medium
     + Split off hardcoded release code names list and default mirrors in
       xen-create-image into separate configuration file which are parsed
       before the default settings or command-line options are set.
+    + Pass --yes to lvcreate only if LVM version is 2.02.99 or
+      higher. Fixes regression introduced with 4.5 by the fix for #754517.
+      - Add new (build-)dependency on libsort-versions-perl.
   * Update Vcs-* headers as Gitorious will close its doors in June.
   * Recommend debian-archive-keyring (for installing Debian DomUs on
     derivatives) and ubuntu-archive-keyring (for installing Ubuntu DomUs

debian/control

@@ -12,6 +12,7 @@ Build-Depends: debhelper (>= 9~),
                libfile-which-perl,
                liblog-message-perl | perl (<< 5.17.0),
                libterm-ui-perl | perl (<< 5.17.0),
+               libsort-versions-perl,
                libtest-notabs-perl,
                libtest-pod-coverage-perl,
                libtest-pod-perl,
@@ -30,6 +31,7 @@ Depends: debootstrap | cdebootstrap,
          libdata-validate-uri-perl,
          libfile-slurp-perl,
          libfile-which-perl,
+         libsort-versions-perl,
          libterm-ui-perl | perl (<< 5.17.0),
          libtext-template-perl,
          openssh-client,