VMS: Updates for 0740-0D1220

lib/setup-vms.h : VAX HP OpenSSL port is ancient, needs help.
                  More defines to set symbols to uppercase.

src/tool_main.c : Fix parameter to vms_special_exit() call.

packages/vms/ :
  backup_gnv_curl_src.com : Fix the error message to have the correct package.

  build_curl-config_script.com : Rewrite to be more accurate.

  build_libcurl_pc.com : Use tool_version.h now.

  build_vms.com : Fix to handle lib/vtls directory.

  curl_gnv_build_steps.txt : Updated build procedure documentation.

  generate_config_vms_h_curl.com :
       * VAX does not support 64 bit ints, so no NTLM support for now.
       * VAX HP SSL port is ancient, needs some help.
       * Disable NGHTTP2 for now, not ported to VMS.
       * Disable UNIX_SOCKETS, not available on VMS yet.
       * HP GSSAPI port does not have gss_nt_service_name.

  gnv_link_curl.com : Update for new curl structure.

  pcsi_product_gnv_curl.com : Set up to optionally do a complete build.
smb: use memcpy() instead of strncpy()

... as it never copies the trailing zero anyway and always just the four
bytes so let's not mislead anyone into thinking it is actually treated
as a string.

Coverity CID: 1260214
openssl: warn for SRP set if SSLv3 is used, not for TLS version

... as it requires TLS and it was was left to warn on the default from
when default was SSL...
sshserver.pl: clarify and streamline variable names