This patch switches code to SPDX one-line license identifiers according to
https://spdx.dev/learn/handling-license-info/
and replacing long license text headers.
I used C++ format on the first line in style
// SPDX-License-Identifier: <id>
except exported libcryptsetup.h, when only C comments are used.
The only additional changes are:
- switch backend utf8.c from LGPL2+ to LGPL2.1+ (as in systemd)
- add some additional formatting lines.
- Do not require any libraries installed, download everything
from upstream git, statically compile (use include, libs and pkg-config
from local directory under tests/fuzz).
Script should work both from OSS-Fuzz and locally.
- Do not require local protobuf (only staticallly compiled, see above).
- Add README.md (TBD, still not finished).
- Fix make dist and distcheck.
- Remove common.[ch] as we can use internal function.
This makes fuzzers also C++ only (remove CFLAGS from Makefile).
