Update to 1.988
    
    - New upstream release 1.988
      - Allow IPv4 in common name, because browsers allow this too; only for scheme
        www/http though, not for rfc2818 (because RC2818 does not allow this; in
        default scheme IPv6 and IPv4 are allowed in CN)
      - Fix handling of public suffix; add exemption for *.googleapis.com
        wildcard, which should not be allowed according to public suffix list but
        actually is used
      - Add hostname verification test based on older test of chromium, but change
        some of the test expectations because we don't want to support IP as SAN
        DNS and because we enforce a public suffix list (and thus *.co.uk should
        not be allowed)
      - Fix t/verify_hostname_standalone.t on systems without usable IDNA or IPv6
        (CPAN RT#95719)
      - Enable IPv6 support only if we have a usable inet_pton
      - Remove stale entries from MANIFEST
      - Add transparent support for DER and PKCS#12 files to specify cert and key,
        e.g. it will autodetect the format
      - If SSL_cert_file is PEM and no SSL_key_file is given it will check if the
        key is in SSL_cert_file too