This is actually ok for this function, but initialised to zero anyway if
PURIFY defined.

This does have the impact of masking any *real* unitialised data reads in bn though.

Patch based on approach suggested by Rich Salz.

PR#3415

PR#3440

  Detected by dcruette@qualitesys.com

Based on an original patch by Neitrino Photonov <neitrinoph@gmail.com>

PR#3439

PR: #3424,#3423,#3422

PR#2985

Based on feedback from Jeffrey Walton.

Reduces number of silly casts in OpenSSL code and likely most
applications.  Consistent with (char *) for "peername" value from
X509_check_host() and X509_VERIFY_PARAM_get0_peername().

PR#2277

PR: #3431

PR#3418.

Pass address of X509_VERIFY_PARAM_ID peername to X509_check_host().
Document modified interface.

Declaration, memory management, accessor and documentation.

PR#319 (reoponed version).

(cherry picked from commit 2cfbec1caea8f9567bdff85d33d22481f2afb40a)

Remove RFC5878 code. It is no longer needed for CT and has numerous bugs

    298 424 656 882 939 1630 1807 2263 2294 2311 2424 2623
    2637 2686 2697 2921 2922 2940 3055 3112 3156 3177 3277

PR: #3390

PR: #3397

ERR_get_error(3) references the non-existent
ERR_get_last_error_line_data instead of the one that does exist,
ERR_peek_last_error_line_data.

PR#3283