Serge Hallyn
f93cf255d4
Update licensing info
Closes #238
Update all files to list SPDX license shortname. Most files are
BSD 3 clause license.
The exceptions are:
serge@sl ~/src/shadow$ git grep SPDX-License | grep -v BSD-3-Clause
contrib/atudel:# SPDX-License-Identifier: BSD-4-Clause
lib/tcbfuncs.c: * SPDX-License-Identifier: 0BSD
libmisc/salt.c: * SPDX-License-Identifier: Unlicense
src/login_nopam.c: * SPDX-License-Identifier: Unlicense
src/nologin.c: * SPDX-License-Identifier: BSD-2-Clause
src/vipw.c: * SPDX-License-Identifier: GPL-2.0-or-later
Signed-off-by: Serge Hallyn <serge@hallyn.com>