CI: increase Azure Pipelines timeouts due to performance issues

The current demand on Azure negatively impacts the CI performance.

runtests.pl: log host OS as detected by Perl environment

ftpserver.pl: log before and after data connection is closed

RELEASE-NOTES: synced

RELEASE-PROCEDURE.md: run the copyright.pl script!

vquic/ngtcp2.h: update copyright year range

Follow-up to 0736ee73d346a52

CI: add build with ngtcp2 + gnutls on Travis CI

vquic: add support for GnuTLS backend of ngtcp2

Currently, the TLS backend used by vquic/ngtcp2.c is selected at compile
time. Therefore OpenSSL support needs to be explicitly disabled.

vquic: add support for GnuTLS backend of ngtcp2

Currently, the TLS backend used by vquic/ngtcp2.c is selected at compile
time. Therefore OpenSSL support needs to be explicitly disabled.

Signed-off-by: Daiki Ueno <dueno@redhat.com>
Closes #5148

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examples/sessioninfo.c: add include to fix compiler warning

Fixes #5171

misc: copyright year updates

Follow-up to 7a71965e9

build: fixed build for systems with select() in unistd.h

Closes #5169

memdebug: don't log free(NULL)

... it serves no purpose and fills up the log.

cleanup: insert newline after if() conditions

Our code style mandates we put the conditional block on a separate
line. These mistakes are now detected by the updated checksrc.

checksrc: warn on obvious conditional blocks on the same line as if()

Closes #5164

cmake: add CMAKE_MSVC_RUNTIME_LIBRARY

Fixes #5165
Closes #5167

ngtcp2: update to git master for the key installation API change

This updates the ngtcp2 OpenSSL backend to follow the API change in
commit 32e703164 of ngtcp2.

Notable changes

ngtcp2: update to git master for the key installation API change

This updates the ngtcp2 OpenSSL backend to follow the API change in
commit 32e703164 of ngtcp2.

Notable changes are:
- ngtcp2_crypto_derive_and_install_{rx,tx}_key have been added to replace
ngtcp2_crypto_derive_and_install_key
- the 'side' argument of ngtcp2_crypto_derive_and_install_initial_key
has been removed

Fixes #5166
Closes #5168

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SECURITY.md: minor rephrase

Closes #5158

output.d: quote the URL when globbing

Some shells do globbing of their own unless the URL is quoted, so maybe
encourage this.

Co-authored-by: Jay Satiro
Closes #5160

dist: add tests/version-scan.pl to tarball

... used in test 1177.

Follow-up to a97d826f6de3

test1177: verify that all the CURL_VERSION_ bits are documented

curl.h: remnove CURL_VERSION_ESNI. Never supported nor documented

Considered experimental and therefore we can do this.

Closes #5157

KNOWN_BUGS: DoH doesn't inherit all transfer options

Closes #4578
Closes #4579

KNOWN_BUGS: DoH leaks memory after followlocation

Closes #4592

KNOWN_BUGS: "FTPS needs session reuse"

Closes #4654

KNOWN_BUGS: "stick to same family over SOCKS pro" is presumed fixed