appveyor.yml: split {build,test}_scripts to avoid exit code masking.

Last modification effectively masked test failures, so that builds
were reported successful even if they failed.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Use 'over 2' for bullet lists.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3117)

Standardize on =over 4 and check for it.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3117)

Add missing =back

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3117)

Check for L<foo|foo>

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3117)

Make default_method mostly compile-time (cont'd)

Forgot to include this commit as requested by review.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2244)

Make default_method mostly compile-time

Document thread-safety issues
Have RSA_null return NULL (always fails)

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2244)

Fix rand_lib.c for no-engine configuration

When configured no-engine, we still refered to rand_engine_lock.
Rework the lock init code to avoid that.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3145)

Fix a test failure when configured without TLSv1.3

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Remove an out of date TODO

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Create an ENDPOINT enum type for use internally

We need it for the custom extensions API

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Prefix custom extension API callback types with SSL_

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Various style tweaks based on feedback

Style updates for the new custom extensions API

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Add documentation for the new custom extensions API

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Add some tests for the new custom extensions API

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Implement a new custom extensions API

The old custom extensions API was not TLSv1.3 aware. Extensions are used
extensively in TLSv1.3 and they can appear in many different types of
messages. Therefore we need a new API to be able to cope with that.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Move the extensions context codes into the public API

This move prepares for the later addition of the new custom extensions
API. The context codes have an additional "SSL_" added to their name to
ensure we don't have name clashes with other applications.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Move ssl/t1_ext.c to ssl/statem/extensions_cust.c

Brings all the extensions code together.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)

Don't try to clean up RAND from ENGINE

This is especially harmful since OPENSSL_cleanup() has already called
the RAND cleanup function

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3137)

Make getting and setting the RAND default method thread safe

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3137)

e_os2.h: Refine OSSL_SSIZE definition under UEFI environment

Under UEFI build environment, we may encounter the OSSL_SSIZE macro
re-definition error in e_os2.h if any module call OpenSSL API directly
by including "openssl/xxxx.h" (caused by the predefined _WIN32/_WIN64
macro, which should have been un-defined under OPENSSL_SYS_UEFI).

Though it's not one recommended usage, this patch could still eliminate
the possible build issue by refining the OSSL_SSIZE definition under
OPENSSL_SYS_UEFI.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3121)

Add support for MLOCK_ONFAULT to secure arena

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3115)

In rand_cleanup_int(), don't go creating a default method

If no default method was yet given, RAND_get_rand_method() will set it
up.  Doing so just to clean it away seems pretty silly, so instead,
use the default_RAND_meth variable directly.

This also clears a possible race condition where this will try to init
things, such as ERR or ENGINE when in the middle of a OPENSSL_cleanup.

Fixes #3128

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3136)

Fix test/asn1_encode_test.c, ASN1_LONG_DATA used inappropriately

It's sheer luck that this was used for the first field only which also
has the same type in all data structures, so the offsets were never wrong

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3127)

Configurations/README: reword bn_ops description.

Fixes GH#3116.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Configure: recognize -framework as linker option [on Apple OSes].

This is handy for internal iOS tests, when you have to make it work
in sandbox.

Reviewed-by: Richard Levitte <levitte@openssl.org>

PBKDF2 computation speedup (15-40%)

This commit contains some optimizations in PKCS5_PBKDF2_HMAC() and
HMAC_CTX_copy() functions which together makes PBKDF2 computations
faster by 15-40% according to my measurements made on x64 Linux with
both asm optimized and no-asm versions of SHA1, SHA256 and SHA512.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1708)

Fix faulty check of padding in x_long.c

Bug uncovered by test

[extended tests]

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

Fix a possible integer overflow in long_c2i

Credit to OSS-Fuzz for finding this.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

Add a test of encoding and decoding LONG, INT32, UINT32, INT64 and UINT64

Also Z varieties.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

Convert SSL_SESSION_ASN1 to use size specific integers

This increases portability of SSL_SESSION files between architectures
where the size of |long| may vary.  Before this, SSL_SESSION files
produced on a 64-bit long architecture may break on a 32-bit long
architecture.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

make update

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

Implement internal ASN.1 types INT32, UINT32, INT64, UINT64

Also Z varieties.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3088)

update ordinals

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Document new ssl(3) functions and options.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Add certificate_authorities tests client to server.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Add ExpectedServerCANames

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Constify SSL_dup_CA_list()

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Print CA names in s_server, add -requestCAfile to s_client

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Don't use client specific functions to retrieve CA list

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Add requestCAfile option

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Add extensions to debug list

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

SSL_CONF support for certificate_authorities

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

New certificate_authorities functions

Add functions to add/retrieve the certificate_authorities. The older
client_CA functions mainly just call the new versions now.

Rename fields sice new extension can be generated by client and server.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3015)

Ensure dhparams can handle X9.42 params in DER

dhparams correctly handles X9.42 params in PEM format. However it failed
to correctly processes them when reading/writing DER format.

Fixes #3102

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3111)

Add missing macros for DHxparams

DHparams has d2i_DHparams_fp, d2i_DHxparams_bio etc, but the equivalent
macros for DHxparams were omitted.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3111)

Add documentation for SSL_get_server_tmp_key()

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3114)

Fix calls to SSL_get_server_tmp_key() in TLSv1.3

The macro SSL_get_server_tmp_key() returns information about the temp key
used by the server during a handshake. This was returning NULL for TLSv1.3
and causing s_client to omit this information in its connection summary.

Fixes #3081

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3114)

Tweak a style issue

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)

Add a test for the problem fixed by the previous commit

Make sure the server can write normal data after earlier writing early data.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)

Restore s->early_data_state with the original value

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)

Update early data test for an even later arrival of CF

Commit 9b5c865df introduced a synthetic delay between arrival of EoED and
CF. We actually want to delay the arrival of CF even further to demonstrate
that we can write early data even when "in init".

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)

Don't handle handshake messages when writing early data on server

If we have received the EoED message but not yet had the CF then we are
"in init". Despite that we still want to write application data, so suppress
the "in init" check in ssl3_write_bytes() in that scenario.

Fixes #3041

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)

Fix a typo in the SSL_get_max_early_data() declarations

SSL_get_max_early_data() recently added by 3fc8d856105e ("Construct the
ticket_early_data_info extension", 2017-02-17) is supposed to take an
SSL, but it doesn't.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3113)

Disable 15-test_ecparam.t when configured no-ec2m

This test doesn't actually fail completely, but there's no real
pattern to distinguish which data files should be omitted when no-ec2m
is configured and which should not.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3103)

Remind people to have 'Fixes #XXXX' in the commit message

It's of course also possible to just add them to the PR description,
but having these lines in the commit messages provide better
automation.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3104)

Fixup the github pull request template

When creating a single commit PR, github will now automatically
include the commit comment first in the pull request description, and
add the template content last.  That makes the description section at
the end useless.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3104)

crypto/ppccap.c: SIGILL-free processor capabilities detection on MacOS X.

It seems to be problematic to probe processor capabilities with SIGILL
on MacOS X. The problem should be limited to cases when application code
is debugged, but crashes were reported even during normal execution...

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

Configure: use 5.10.0, don't require...

Configure started with 'require 5.10.0', but if executed by older perl
it failed with "might be runaway multi-line // string" instead of
naturally expected "Perl v5.10.0 required--this is only v5.x.y".

Reviewed-by: Richard Levitte <levitte@openssl.org>

e_afalg.[ch]: fix --strict-warnings with gcc 4.x and 32-bit build.

Reviewed-by: Richard Levitte <levitte@openssl.org>

bio/b_print.c: switch to int64_t as "greatest-width integer type".

Originally there was dependency on BN configuration parameters, but
it stemmed from times when "long long" support was optional. Today
we require 64-bit support from compiler, and there is no reason to
have "greatest-width integer" depend on BN configuration.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Fix for #2730. Add CRLDP extension to list of supported extensions

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3087)

Update SSL_extension_supported()

Numerous changes have been made to the supported built-in extensions and
SSL_extension_supported() has not kept up.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3097)

e_os.h: drop now-redundant PRIu64 [and fix OSSLzu].

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3083)

apps/*.c: switch to platform-neutral format modifiers in BIO_print calls.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3083)

bio/b_print.c: recognize even 'j' format modifier.

'j' is specified as modifier for "greatest-width integer type", which in
practice means 64 bits on both 32- and 64-bit platforms. Since we rely
on __attribute__((__format__(__printf__,...))) to sanitize BIO_print
format, we can use it to denote [u]int64_t-s in platform-neutral manner.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3083)

Fix s_client early data indicator

s_client was always saying that early_data was rejected even when it was
accepted. This was because it was using the wrong test to detect the end
of the handshake. It was using SSL_in_init() which only tells you whether
it is currently processing/sending/expecting handshake messages. It should
use SSL_is_init_finished() which tells you that no handshake messages are
being processed/sent/expected AND we have completed the handshake. In the
early data case we are not processing/sending handshake messages and we
are expecting early data (not a handshake message) - but the handshake has
not yet completed.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3090)

Provide a test for pause between EoED and CF

This tests the bug fixed in the previous commit. We introduce a synthetic
delay between the server receiving EoED and CF and check that we can still
send early data.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3089)

Fix early data bug with pause between EoED and CF

If the server received EoED then SSL_read_early_data() will return
SSL_READ_EARLY_DATA_FINISH. However if the CF has not yet been processed
then SSL_is_init_finished() will still return 0. Therefore we should still
be able to write early data.

Fixes #3041

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3089)

Add SSL_dup description

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3085)

Documentation updates

Fix capitilistion of list items.
Wrap long lines.
Add full stops to the ends of sentances.
Change ciphersuite to cipher suite in all of doc.

[skip ci]

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3082)

Add a test for the bug fixed in the previous commit

We want to make sure that if we if are using SSL_MODE_AUTO_RETRY then
if SSL_read_early_data() hits EndOfEarlyData then it doesn't auto retry
and end up with normal data. The same issue could occur with read_ahead
which is what we use in this test.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3077)

Fix bug with SSL_read_early_data()

If read_ahead is set, or SSL_MODE_AUTO_RETRY is used then if
SSL_read_early_data() hits an EndOfEarlyData message then it will
immediately retry automatically, but this time read normal data instead
of early data!

Fixes #3041

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3077)

Documentation cleanup for man1/enc.pod

[skip ci]

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3073)

bio/b_print.c: fix %z failure in 32-bit build.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Add a simple test for the z modifier

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3064)

Use the z modifier instead of OSSLzu with BIO_printf

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3064)

Add z modifier parsing to the BIO_printf et all format string

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3064)

cipherbytes_test: remove unused includes

cipherbytes_test does not use the testutil / test_main test framework.

Reviewed-by: Andy Polyakov <appro@openssl.org>

engines/e_capi.c: slip in PROV_RSA_AES for interchangable CSP only.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3034)

engines/e_capi.c: adhere to CryptAcquireContextW unconditionally.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

engine/e_capi.c: more formatting and styling fixes.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

Documentation cleanup for man1/nseq.pod

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3074)

Documentation clean up for man1/list.pod

[skip ci]

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3072)

doc: Add stitched ciphers to EVP_EncryptInit.pod

These ciphers don't appear to be documented anywhere. Given the
performance[1] benefits I think it makes sense to expose them.

[1] https://software.intel.com/sites/default/files/open-ssl-performance-paper.pdf

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3067)

doc: Add missing options in s_{server,client}

These were added to the help in ad775e04f6dab but not the pods.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3065)

Fix the build warning under OPENSSL_NO_GOST

Variable 'pktype' was set but not used under OPENSSL_NO_GOST. This change
will fix the build warning under [-Werror=unused-but-set-variable].

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2961)

Cleaning UEFI Build with additional OPENSSL_SYS_UEFI flags

Add OPENSSL_SYS_UEFI to remove unused syslog and uid stuffs for
more clean UEFI build.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2961)

Further de-obfuscation

A similar change that probably should have been wrapped into
commit e0926ef49df09a85117d7442db83f321aeb5b982.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3010)

Add documentation for SNI APIs

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3071)

Remove duplicate doc

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3068)

More typo fixes

Fix some comments too
[skip ci]

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3069)

Typo in SSL_CTX_sess_number.pod - started

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

Tidy up the SSL options in SSL_CTX_set_options.pod

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

SSL_CTX_use_PrivateKey_file uses private key, not certificate

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

Typo in SSL_CONF_cmd_argv.pod

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

Typo in SSL_CONF_CTX_set1_prefix.pod - change SSL_CTX_cmd to SSL_CONF_cmd

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

Typo in SSL_CONF_CTX_set_flags.pod

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3070)

Test infrastructure additions.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3011)

Fix 0 -> NULL, indentation

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3066)