RFR: Two krb5 release notes

[Weijun Wang]

Please take a review on these 2 release notes:

https://bugs.openjdk.java.net/browse/JDK-8177084
8029994: Support "include" and "includedir" in krb5.conf
https://bugs.openjdk.java.net/browse/JDK-8177083
8036779: sun.security.krb5.KdcComm interprets kdc_timeout as msec 
instead of sec

Both were integrated quite some time ago.

Thanks
Max