JDK-8036971 : krb5.conf does not accept directive lines before the first section
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In JDK 8, if there is a directive line before the first section of a krb5.conf file, say,
default_realm = R
the parsing will fail. This is a regression after JDK-7184246.
JDK-8029994 is about supporting include/includedir directives and ignoring other unknown ones. However I cannot guarantee when it will be finished and whether it can be backported to 8u, so a fix is still needed.