Log Message:
gnutls: updated to 3.7.7

Version 3.7.7 (released 2022-07-28)

** libgnutls: Fixed double free during verification of pkcs7 signatures.
   [CVE-2022-2509]

** libgnutls: gnutls_hkdf_expand now only accepts LENGTH argument less than or
   equal to 255 times hash digest size, to comply with RFC 5869 2.3.

** libgnutls: Length limit for TLS PSK usernames has been increased
   from 128 to 65535 characters.

** libgnutls: AES-GCM encryption function now limits plaintext
   length to 2^39-256 bits, according to SP800-38D 5.2.1.1.

** libgnutls: New block cipher functions have been added to transparently
   handle padding.  gnutls_cipher_encrypt3 and gnutls_cipher_decrypt3 can be
   used in combination of GNUTLS_CIPHER_PADDING_PKCS7 flag to automatically
   add/remove padding if the length of the original plaintext is not a multiple
   of the block size.

** libgnutls: New function for manual FIPS self-testing.

** API and ABI modifications:
gnutls_fips140_run_self_tests: New function
gnutls_cipher_encrypt3: New function
gnutls_cipher_decrypt3: New function
gnutls_cipher_padding_flags_t: New enum

** guile: Guile 1.8 is no longer supported

** guile: Session record port treats premature termination as EOF
   Previously, a ‘gnutls-error’ exception with the
   ‘error/premature-termination’ value would be thrown while reading from a
   session record port when the underlying session was terminated
   prematurely.  This was inconvenient since users of the port may not be
   prepared to handle such an exception.
   Reading from the session record port now returns the end-of-file object
   instead of throwing an exception, just like it would for a proper
   session termination.

** guile: Session record ports can have a ‘close’ procedure.
   The ‘session-record-port’ procedure now takes an optional second
   parameter, and a new ‘set-session-record-port-close!’ procedure is
   provided to specify a ‘close’ procedure for a session record port.
   This ‘close’ procedure lets users specify cleanup operations for when
   the port is closed, such as closing the file descriptor or port that
   backs the underlying session.