Add clang debug target.
Prevent use of RSA+MD5 in TLS 1.2 by default.

Removing RSA+MD5 from the default signature algorithm list
prevents its use by default.

If a broken implementation attempts to use RSA+MD5 anyway the sanity
checking of signature algorithms will cause a fatal alert.
Time value for various platforms.

The function gettimeofday() is not supported on all platforms. Use
more portable versions. Adapted from FIPS code.
Typo.
Extend SSL_CONF

Extend SSL_CONF to return command value types.

Add certificate and key options.

Update documentation.
Add demo for SSL server using SSL_CONF.
Remove gratuitous patent references
Modify sample accept.cnf
Fix various typos.
Do not include a timestamp in the Client/ServerHello Random field.

Instead, send random bytes, unless SSL_SEND_{CLIENT,SERVER}RANDOM_MODE
is set.

This is a forward-port of commits:
  4af793036f6ef4f0a1078e5d7155426a98d50e37
  f4c93b46edb51da71f09eda99e83eaf193a33c08
  3da721dac9382c48812c8eba455528fd59af2eef
  2583270191a8b27eed303c03ece1da97b9b69fd3

While the gmt_unix_time record was added in an ostensible attempt to
mitigate the dangers of a bad RNG, its presence leaks the host's view
of the current time in the clear.  This minor leak can help
fingerprint TLS instances across networks and protocols... and what's
worse, it's doubtful thet the gmt_unix_time record does any good at
all for its intended purpose, since:

    * It's quite possible to open two TLS connections in one second.

    * If the PRNG output is prone to repeat itself, ephemeral
      handshakes (and who knows what else besides) are broken.
Fix another gmt_unix_time case in server_random
Remove unused variable.
Update demos/bio/README
Constification.
Fix argument processing.
Add SSL_CONF command to set DH Parameters.
Update test server details.
POD: Fix item numbering

Newer pod2man considers =item [1-9] part of a numbered list, while =item
0 starts an unnumbered list. Add a zero effect formatting mark to override
this.

doc/apps/smime.pod around line 315: Expected text after =item, not a
number
...

PR#3146
POD: Fix list termination

This fixes problems in POD list formatting: extra or missing =back
sequences.

doc/ssl/SSL_CTX_set1_curves.pod around line 90: =back without =over
doc/ssl/SSL_CTX_set1_verify_cert_store.pod around line 73: =back without =over
doc/ssl/SSL_CTX_add1_chain_cert.pod around line 82: =back without =over
doc/crypto/evp.pod around line 40: '=item' outside of any '=over'
crypto/des/des.pod around line 184: You forgot a '=back' before '=head1'

PR#3147
bn/asm/x86_64-mont.pl: minor optimization [for Decoded ICache].