Bug#949965: Add support for jigdo v2 format

[Steve McIntyre <steve@einval.com>]

Package: debian-cd
Version: 3.1.25
Severity: normal

Jigdo and jigit already have support for the new sha256-based
format. Add support in debian-cd for using it too.

-- System Information:
Debian Release: 10.2
  APT prefers stable-debug
  APT policy: (500, 'stable-debug'), (500, 'stable'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages debian-cd depends on:
ii  apt                        1.8.2
ii  bc                         1.07.1-2+b1
ii  bzip2                      1.0.6-9.2~deb10u1
ii  cpp                        4:8.3.0-1
ii  curl                       7.64.0-4
ii  dctrl-tools [grep-dctrl]   2.24-3
ii  dpkg-dev                   1.19.7
ii  genisoimage                9:1.1.11-3+b2
pn  libcompress-zlib-perl      <none>
pn  libdigest-md5-perl         <none>
ii  libdpkg-perl               1.19.7
ii  lynx                       2.8.9rel.1-3
ii  make                       4.2.1-1.2
ii  perl [libdigest-sha-perl]  5.28.1-6
ii  tofrodos                   1.7.13+ds-4
ii  wget                       1.20.1-1.1
ii  xorriso                    1.5.0-1

Versions of packages debian-cd recommends:
ii  dosfstools       4.1-2
ii  hfsutils         3.2.6-14
ii  isolinux         3:6.04~git20190206.bf6db5b4+dfsg1-1
ii  mtools           4.0.23-1
ii  netpbm           2:10.0-15.3+b2
ii  syslinux-common  3:6.04~git20190206.bf6db5b4+dfsg1-1
ii  syslinux-utils   3:6.04~git20190206.bf6db5b4+dfsg1-1

debian-cd suggests no packages.

-- no debconf information