Same justification as the previous commit.
$ for i in network/*-*; do git blame $i;done | less
shows that those files were written by Tom Gundersen, Lennart Poettering, Yu
Watanabe, me, and Marc-André Lureau.
Using OpenSSL brings in an additional dependency for all users of
libsystemd.so even though it's just one API that makes use of it.
The khash implementation is awkward as it requires context switches and
computation inside the kernel, thus leaving the process.
Remove both from libsystemd.so, and use exclusively the internal hmac fallback.
While this is not optimized, the sd-id128 API is not used in
performance-critical contexts where hardware acceleration would make a
noticeable difference.
All other examples were relicensed to CC0-1.0 since they are intended
to be copied and pasted anywhere without any restrictions.
Relicense the last one too.
It makes it easier to process the license automatically like other files.
The text of the license in tools/chromiumos/LICENSE matches
https://spdx.org/licenses/BSD-3-Clause.html exactly.
