• Allow to build against contemporary versions of OpenSSL and set missing INSTALLS_ICONS as reported by portlint(1)
• Revert WITH_DEBUG part of the r512774 as explained by mat@:
  
  WITH_DEBUG means the port will be built with debugging symbols and will not be stripped. So before, if WITH_DEBUG was set, it was built with all debugging bells and whistles. Now, it only adds debug=1 to MAKE_ARGS, and it gets stripped in the end. WITH_DEBUG must not be set by port options, it is a user-facing variable.

PR: 233972