* Restore SSL dumping for OpenSSL >= 3.0.

* Restore SSL dumping for OpenSSL >= 3.0.

  Since r1908537 BIO_set_callback_ex is used with OpenSSL >= 3.0 instead of
  BIO_set_callback to set the BIO callback. The meaning of parameters and
  their range of values in the callback function set by BIO_set_callback_ex
  has changed compared to the callback function set by BIO_set_callback
  although parameters kept their names. Accommodate for this and adjust the
  code accordingly.
  Furthermore limit the size of dumps to APR_UINT16_MAX bytes. Given the length
  of SSL records of 16k this should not have practical implications.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1918880 13f79535-47bb-0310-9956-ffa450edef68