Spec for atan2 should be atan2(Y, X), not atan2(X, Y)
Don't try to add the log_mf_h handler in sasl unless configured to do so.

The functions add_error_logger_mf/1 and delete_error_logger_mf/1 in sasl.erl
are designed to do nothing if the handler configuration as returned by
get_error_logger_mf/0 is 'undefined'. However, that function returns a
triple {undefined,undefined,undefined} when the error_logger_mf_*
configurations have not been set. This makes SASL always try to add the
log_mf_h handler on startup, passing 'undefined' for each of the Dir, MaxB
and MaxF parameters. The gen_event callback function log_mf_h:init/1 will
then crash with a function_clause error, causing the handler to be silently
removed again. This patch fixes the problem by making get_error_logger_mf/0
return the single atom 'undefined' as it is expected to do.
Add SSL Server Name Indication (SNI) client support

See RFC 6066 section 3
Add a new server_name_indication option to ssl:connect

- Set to disable to explicitly disable SNI support.
- Set to a hostname when upgrading from TCP to TLS.
Update documentation
Merge branch 'richcarl/sasl-dont-add-undefined-handler/OTP-11464' into maint

* richcarl/sasl-dont-add-undefined-handler/OTP-11464:
  Don't try to add the log_mf_h handler in sasl unless configured to do so.
Merge branch 'maint'
Do not attempt to detect lists of printable characters in Data

This is to avoid outputting something like "\"%\f" instead of [34,37,12] in the XML.
erts: Add cerl -dump and dumping in z_SUITE
Merge branch 'lukas/cerl_dump/OTP-11468' into maint

* lukas/cerl_dump/OTP-11468:
  erts: Add cerl -dump and dumping in z_SUITE
Merge branch 'maint'

* maint:
  erts: Add cerl -dump and dumping in z_SUITE
Merge branch 'asterite/atan2_spec/OTP-11465' into maint

* asterite/atan2_spec/OTP-11465:
  Spec for atan2 should be atan2(Y, X), not atan2(X, Y)
Merge branch 'maint'
Merge branch 'robertoaloi/eunit/surefire-printable-chars/OTP-11467' into maint

* robertoaloi/eunit/surefire-printable-chars/OTP-11467:
  Do not attempt to detect lists of printable characters in Data
Merge branch 'maint'
Merge branch 'klyr/ssl_sni_client/OTP-11460' into maint

* klyr/ssl_sni_client/OTP-11460:
  Update documentation
  Add a new server_name_indication option to ssl:connect
  Add SSL Server Name Indication (SNI) client support
Merge branch 'maint'