Make reading DNs more consistent across modules.•••- If the DN contains a new line character then replace it with a
space instead of killing the entire DN in the ssl_gnutls and
ssl_openssl modules.
- Apply the same logic to ssl_mbedtls which previously did not
handle spaces in DNs.
Add 'if-host-match' option to m_sslinfo oper autologin configuration.•••This adds an option to perform the source host check (which is usually
performed on manual oper login) in addition to the certificate fingerprint
check when automatically logging in opers upon connection to the ircd.