Just like initial_auto_raid_lvm borrows parts of the auto_lvm_prepare
function (found in partman-auto-lvm's lib/auto-lvm.sh), implementing
LVM-on-RAID, initial_auto_raid_crypto_lvm now borrows the exact same
parts plus some others from partman-auto-crypto's autopartition-crypto,
implementing LVM-on-LUKS-on-RAID.

While this seems to work as intended, whether the VG map should be
tweaked remains an open question. Also, some other parts weren't copied
from autopartition-crypto as they didn't seem to be needed.

Finally, the first instinct would be to add a dependency against
partman-crypto since its lib/crypto-base.sh is sourced, but there is
no dependency against partman-auto-lvm for its lib/auto-lvm.sh.

Adjust initial_auto_raid_fs to support "crypto-lvm" in addition to "lvm":
 - set method to "crypto" instead of "lvm";
 - save device to /var/lib/partman/initial_auto_raid_crypto_pvs instead
   of saving it to /var/lib/partman/initial_auto_raid_pvs.

Adjust initial_auto_raid_crypto_lvm to read this new file.

This reverts commit a23c7774.

Rationale: https://lists.debian.org/debian-boot/2023/01/msg00203.html

Fix some issues reported by lintian

See merge request !2

Changes-By: lintian-brush
Fixes: lintian: uses-debhelper-compat-file
See-also: https://lintian.debian.org/tags/uses-debhelper-compat-file.html

Changes-By: lintian-brush
Fixes: lintian: package-uses-deprecated-debhelper-compat-version
See-also: https://lintian.debian.org/tags/package-uses-deprecated-debhelper-compat-version.html

Remove unnecessary constraints

See merge request !1

* Build-Depends: Drop versioned constraint on po-debconf.
* partman-auto-raid: Drop versioned constraint on partman-auto and partman-base in Depends.

Changes-By: deb-scrub-obsolete

Fix missing package name in 'Project-Id-Version' header of template.pot file, to allow correct declaration in po|pot files

With many thanks for all his contributions over the years!