Bug#977620: licensecheck: Add support for SPDX-License-Identifier tags in licensecheck

[Jeremiah C. Foster]

Package: licensecheck
Version: 3.0.31-3
Severity: wishlist

Dear Maintainer,

SPDX-License-Identifier is a "tag" used by the SPDX project to
identify the license of individual files. The licensecheck tool may
benefit from have this functionality.

-- System Information:
Debian Release: 10.7
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.9.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages licensecheck depends on:
ii  libgetopt-long-descriptive-perl        0.103-2
ii  libmoo-perl                            2.003004-2
ii  libnamespace-clean-perl                0.27-1
ii  libpath-iterator-rule-perl             1.014-1
ii  libpath-tiny-perl                      0.108-1
ii  libpod-constants-perl                  0.19-1
ii  libregexp-pattern-license-perl         3.0.31-4
ii  libscalar-list-utils-perl              1:1.50-1+b1
ii  libsort-key-perl                       1.33-2+b1
ii  libstrictures-perl                     2.000005-1
ii  libstring-copyright-perl               0.003006-1
ii  libstring-escape-perl                  2010.002-2
ii  libtry-tiny-perl                       0.30-1
ii  perl                                   5.28.1-6+deb10u1
ii  perl-base [libscalar-list-utils-perl]  5.28.1-6+deb10u1

licensecheck recommends no packages.

Versions of packages licensecheck suggests:
ii  bash-completion  1:2.8-6

-- no debconf information