(cherry picked from commit 80ccc66d)

If an ASN1_INTEGER structure is allocated but not explicitly set encode
it as zero: don't generate an invalid zero length INTEGER.
(cherry picked from commit 1643edc6)

(cherry picked from commit 1546fb78)

(cherry picked from commit 342dbbbe)

PR: 3004
(cherry picked from commit 7c43601d)

PR: 2981, 2837

podlators 2.5.0 has switched to dying on POD syntax errors. This means
that a bunch of long-standing erroneous POD in the openssl documentation
now leads to fatal errors from pod2man, halting installation.

Unfortunately POD constraints mean that you have to sort numeric lists
in ascending order if they start with 1: you cannot do 1, 0, 2 even if
you want 1 to appear first. I've reshuffled such (alas, I wish there
were a better way but I don't know of one).
(cherry picked from commit 5cc27077)

(cherry picked from commit 9c437e2f)

The version check for DTLS1_VERSION was redundant as
DTLS1_VERSION > TLS1_1_VERSION, however we do need to
check for DTLS1_BAD_VER for compatibility.

PR:2984
(cherry picked from commit d980abb2)

Now we set the current certificate to the one used by a server
there is no need to call ssl_get_server_send_cert which will
fail if we haven't sent a certificate yet.

Workaround for non-compliant tar files sometimes created by "make dist".

(cherry picked from commit 3caeef94)

(cherry picked from commit f93a4187)

(cherry picked from commit e9baceab)

With previous commit it also ensures that valgrind is happy.

Fix the calculation that checks there is enough room in a record
after removing padding and optional explicit IV. (by Steve)

For AEAD remove the correct number of padding bytes (by Andy)

MD5 should use little endian order. Fortunately the only ciphersuite
affected is EXP-RC2-CBC-MD5 (TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5) which
is a rarely used export grade ciphersuite.