Add option --debootstrap-cmd to xen-create-image and xt-install-image

debian/changelog

@@ -34,6 +34,11 @@ xen-tools (4.2~rc1-1) UNRELEASED; urgency=low
     - xt-install-image now exits with return value 127 instead of 0 to
       indicate errors on running the command given in --install-method.
       (Closes: #534290)
+    - The debootstrap command now also can be configured on the
+      commandline with --debootstrap-cmd in xen-create-image and
+      xt-install-image (Enhances fix for #436480 which added the
+      debootstrap-cmd config file option; Changed "Depends: debootstrap"
+      to "Depends: debootstrap | cdebootstrap" in debian/control)
   * Removal of /etc/bash_completion.d/xm from the package since
     bash-completion ships a more elaborate version of that file. (Closes:
     #566683, #550590, LP: #538917, #484098)

debian/control

@@ -10,7 +10,7 @@ Vcs-Git: git://gitorious.org/xen-tools/xen-tools.git
 
 Package: xen-tools
 Architecture: all
-Depends: debootstrap, perl-modules, libtext-template-perl, libconfig-inifiles-perl, libfile-slurp-perl, ${misc:Depends}
+Depends: debootstrap | cdebootstrap, perl-modules, libtext-template-perl, libconfig-inifiles-perl, libfile-slurp-perl, ${misc:Depends}
 Recommends: xen-hypervisor-amd64 | xen-hypervisor-i386 | xen-hypervisor-i386-pae, rinse, xen-shell, libexpect-perl
 Suggests: reiserfsprogs, xfsprogs, xen-utils
 Description: Tools to manage Xen virtual servers